Dépouillements

Snubber-assisted zero-voltage and zero-current transition bilateral buck and boost chopper for EV drive application and test evaluation at 25 kW / Tsuruta, Y. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 4 - 11 Titre : Snubber-assisted zero-voltage and zero-current transition bilateral buck and boost chopper for EV drive application and test evaluation at 25 kW Type de document : texte imprimé Auteurs : Tsuruta, Y., Auteur ; Ito, Y., Auteur ; Kawamura, A., Auteur Année de publication : 2009 Article en page(s) : pp. 4 - 11 Note générale : electronics Langues : Anglais (eng) Mots-clés : DC-DC  power  convertors;  choppers  (circuits);  electric  drives;  electric  vehicles;  switching  convertors;  zero  current  switching;  zero  voltage  switching Résumé : A new high-efficiency and high-power bilateral buck and boost chopper circuit for the electric-vehicle drive application is presented. The operation principle of snubber-assisted zero-voltage and zero-current transition (SAZZ) topology was applied, and a new SAZZ bilateral buck-boost chopper circuit (SAZZ-1) was created by combining two basic SAZZ circuit types. A 50-kHz 25-kW SAZZ-1 was fabricated and tested. An efficiency of 96.6% at 25 kW with boost mode (input: 250 V/output: 390 V) in forward direction and an efficiency of 97.4% at 25 kW with buck mode (input: 420 V/output: 300 V) in forward direction were obtained. The high potentiality of the SAZZ-1 chopper is demonstrated as we expected. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682708&sortType%3Das [...] [article] Snubber-assisted zero-voltage and zero-current transition bilateral buck and boost chopper for EV drive application and test evaluation at 25 kW [texte imprimé] / Tsuruta, Y., Auteur ; Ito, Y., Auteur ; Kawamura, A., Auteur . - 2009 . - pp. 4 - 11. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 4 - 11 Mots-clés : DC-DC  power  convertors;  choppers  (circuits);  electric  drives;  electric  vehicles;  switching  convertors;  zero  current  switching;  zero  voltage  switching Résumé : A new high-efficiency and high-power bilateral buck and boost chopper circuit for the electric-vehicle drive application is presented. The operation principle of snubber-assisted zero-voltage and zero-current transition (SAZZ) topology was applied, and a new SAZZ bilateral buck-boost chopper circuit (SAZZ-1) was created by combining two basic SAZZ circuit types. A 50-kHz 25-kW SAZZ-1 was fabricated and tested. An efficiency of 96.6% at 25 kW with boost mode (input: 250 V/output: 390 V) in forward direction and an efficiency of 97.4% at 25 kW with buck mode (input: 420 V/output: 300 V) in forward direction were obtained. The high potentiality of the SAZZ-1 chopper is demonstrated as we expected. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682708&sortType%3Das [...]

Performance evaluation of controlled-capacitor-charging-type inverters / Chakraborty, C. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 12 - 19 Titre : Performance evaluation of controlled-capacitor-charging-type inverters Type de document : texte imprimé Auteurs : Chakraborty, C., Auteur ; Dalapati, S., Auteur ; Bhattacharya, S., Auteur Année de publication : 2009 Article en page(s) : pp. 12 - 19 Note générale : electronics Langues : Anglais (eng) Mots-clés : invertors;  power  capacitors Résumé : This paper presents the performance of capacitor-charging-type inverters. Both single- and three-phase inverters are considered. A simple technique to design the L -C elements of such an inverter is introduced. The switching devices are operated in the discontinuous conduction mode to reduce the size of the inductor and also for better dynamic performance. The inverter is simulated in PSPICE. An experimental prototype is produced to verify the results from simulation. Experimentations have been conducted for single-phase and three-phase systems. The inverter is found to operate satisfactorily for various types of load including unbalanced load. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4666723&sortType%3Das [...] [article] Performance evaluation of controlled-capacitor-charging-type inverters [texte imprimé] / Chakraborty, C., Auteur ; Dalapati, S., Auteur ; Bhattacharya, S., Auteur . - 2009 . - pp. 12 - 19. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 12 - 19 Mots-clés : invertors;  power  capacitors Résumé : This paper presents the performance of capacitor-charging-type inverters. Both single- and three-phase inverters are considered. A simple technique to design the L -C elements of such an inverter is introduced. The switching devices are operated in the discontinuous conduction mode to reduce the size of the inductor and also for better dynamic performance. The inverter is simulated in PSPICE. An experimental prototype is produced to verify the results from simulation. Experimentations have been conducted for single-phase and three-phase systems. The inverter is found to operate satisfactorily for various types of load including unbalanced load. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4666723&sortType%3Das [...]

Analysis of common-mode voltage in utility-interactive fuel cell power conditioners / Palma, L. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 20 - 27 Titre : Analysis of common-mode voltage in utility-interactive fuel cell power conditioners Type de document : texte imprimé Auteurs : Palma, L., Auteur ; Harfman Todorovic, M., Auteur ; Enjeti, P.N., Auteur Année de publication : 2009 Article en page(s) : pp. 20 - 27 Langues : Anglais (eng) Mots-clés : DC-AC  power  convertors;  DC-DC  power  convertors;  PWM  power  convertors;  earthing;  fuel  cells;  switching  convertors Résumé : Fuel cell stacks produce a dc output with a 2:1 voltage variation from no load to full load. It is customary for a utility-scale fuel cell stack to consist of several hundreds of series-connected cells, each producing 0.6 V at full load. A power conditioner consisting of dc-dc and dc-ac converters is required for utility interface, which are operated in high frequency, employing pulsewidth-modulation control for voltage and current regulation. Due to their switch-mode nature, a common-mode voltage with respect to ground is generated. The common-mode voltage, in turn, contributes to the circulating ground current, which can interfere with the ground fault protection system. In addition, it also contributes to the neutral shift and electromagnetic interference. Moreover, the electrostatic potential to ground within the fuel cell stack needs to be limited for safe operation. This paper presents an analysis of common-mode voltage in several fuel-cell-powered converter topologies connected to the electric utility and discusses several mitigation methods suitable for utility-scale generation. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4608744&sortType%3Das [...] [article] Analysis of common-mode voltage in utility-interactive fuel cell power conditioners [texte imprimé] / Palma, L., Auteur ; Harfman Todorovic, M., Auteur ; Enjeti, P.N., Auteur . - 2009 . - pp. 20 - 27. Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 20 - 27 Mots-clés : DC-AC  power  convertors;  DC-DC  power  convertors;  PWM  power  convertors;  earthing;  fuel  cells;  switching  convertors Résumé : Fuel cell stacks produce a dc output with a 2:1 voltage variation from no load to full load. It is customary for a utility-scale fuel cell stack to consist of several hundreds of series-connected cells, each producing 0.6 V at full load. A power conditioner consisting of dc-dc and dc-ac converters is required for utility interface, which are operated in high frequency, employing pulsewidth-modulation control for voltage and current regulation. Due to their switch-mode nature, a common-mode voltage with respect to ground is generated. The common-mode voltage, in turn, contributes to the circulating ground current, which can interfere with the ground fault protection system. In addition, it also contributes to the neutral shift and electromagnetic interference. Moreover, the electrostatic potential to ground within the fuel cell stack needs to be limited for safe operation. This paper presents an analysis of common-mode voltage in several fuel-cell-powered converter topologies connected to the electric utility and discusses several mitigation methods suitable for utility-scale generation. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4608744&sortType%3Das [...]

Frequency-shaped sliding mode control using output sampled measurements / Mehta, A. J. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 28 - 35 Titre : Frequency-shaped sliding mode control using output sampled measurements Type de document : texte imprimé Auteurs : Mehta, A. J., Auteur ; Bandyopadhyay, B., Auteur Année de publication : 2009 Article en page(s) : pp. 28 - 35 Note générale : elecronics Langues : Anglais (eng) Mots-clés : frequency  control;  variable  structure  systems Résumé : In this paper, a method is presented for frequency-shaped sliding mode control using output feedback. A compensator is introduced in the sliding surface to attenuate the certain frequency component of the sliding mode dynamics. The output is measured at a faster rate than the control input to estimate the states of the system. The proposed output feedback frequency-shaped sliding mode controller is designed for the vibration suppression of intelligent structure. The simulation and experimental results show the efficacy of the method. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663706&sortType%3Das [...] [article] Frequency-shaped sliding mode control using output sampled measurements [texte imprimé] / Mehta, A. J., Auteur ; Bandyopadhyay, B., Auteur . - 2009 . - pp. 28 - 35. elecronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 28 - 35 Mots-clés : frequency  control;  variable  structure  systems Résumé : In this paper, a method is presented for frequency-shaped sliding mode control using output feedback. A compensator is introduced in the sliding surface to attenuate the certain frequency component of the sliding mode dynamics. The output is measured at a faster rate than the control input to estimate the states of the system. The proposed output feedback frequency-shaped sliding mode controller is designed for the vibration suppression of intelligent structure. The simulation and experimental results show the efficacy of the method. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663706&sortType%3Das [...]

Verification of flexible actuator from position and force transfer characteristic and its application to bilateral teleoperation system / Hyodo, S. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 36 - 42 Titre : Verification of flexible actuator from position and force transfer characteristic and its application to bilateral teleoperation system Type de document : texte imprimé Auteurs : Hyodo, S., Auteur ; Soeda, Y., Auteur ; Ohnishi, K., Auteur Année de publication : 2009 Article en page(s) : pp. 36 - 42 Note générale : electronics Langues : Anglais (eng) Mots-clés : actuators;  motion  control;  telerobotics Résumé : Robot hands have been utilized in bilateral teleoperation as mechanical interfaces. As mechanisms of robot hands, wire mechanisms and rod mechanisms have been developed. Wire mechanisms have a flexibility of allocation of actuators and the fingertips of the robot hand. The demerit of wire mechanisms is that they do not transmit position and force accurately. On the other hand, rod mechanisms are useful for transmitting position and force accurately. The disadvantage of rod mechanisms is that they restrict allocation of actuators and the fingertips of the robot hand. Therefore, the flexible actuator has been developed for having merits of both wire mechanisms and rod mechanisms. In the flexible actuator, the thrust wire transmits position and force from actuators to the fingertips of the robot hand. This paper verifies position and force transfer characteristics of the thrust wire. Moreover, as one of the application of the flexible actuator, the experimental results of a bilateral teleoperation system with the flexible actuator is shown. It is confirmed that the flexible actuator has the merits of both wire mechanisms and rod mechanisms when the flexible actuator is applied to the bilateral teleoperation system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663694&sortType%3Das [...] [article] Verification of flexible actuator from position and force transfer characteristic and its application to bilateral teleoperation system [texte imprimé] / Hyodo, S., Auteur ; Soeda, Y., Auteur ; Ohnishi, K., Auteur . - 2009 . - pp. 36 - 42. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 36 - 42 Mots-clés : actuators;  motion  control;  telerobotics Résumé : Robot hands have been utilized in bilateral teleoperation as mechanical interfaces. As mechanisms of robot hands, wire mechanisms and rod mechanisms have been developed. Wire mechanisms have a flexibility of allocation of actuators and the fingertips of the robot hand. The demerit of wire mechanisms is that they do not transmit position and force accurately. On the other hand, rod mechanisms are useful for transmitting position and force accurately. The disadvantage of rod mechanisms is that they restrict allocation of actuators and the fingertips of the robot hand. Therefore, the flexible actuator has been developed for having merits of both wire mechanisms and rod mechanisms. In the flexible actuator, the thrust wire transmits position and force from actuators to the fingertips of the robot hand. This paper verifies position and force transfer characteristics of the thrust wire. Moreover, as one of the application of the flexible actuator, the experimental results of a bilateral teleoperation system with the flexible actuator is shown. It is confirmed that the flexible actuator has the merits of both wire mechanisms and rod mechanisms when the flexible actuator is applied to the bilateral teleoperation system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663694&sortType%3Das [...]

Realization of a motion control IC for X-Y table based on novel FPGA technology / Kung, Ying-Shieh in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 43 - 53 Titre : Realization of a motion control IC for X-Y table based on novel FPGA technology Type de document : texte imprimé Auteurs : Kung, Ying-Shieh, Auteur ; Rong-Fong Fung, Auteur ; Ting-Yu Tai, Auteur Année de publication : 2009 Article en page(s) : pp. 43 - 53 Note générale : electronics Langues : Anglais (eng) Mots-clés : field  programmable  gate  arrays;  motion  control;  permanent  magnet  motors;  synchronous  motor  drives;  system-on-chip Résumé : The novel field-programmable-gate-array (FPGA) technology is able to combine an embedded processor and an application intellectual property to be a system-on-a-programmable-chip developing environment. Therefore, this paper presents a motion control IC for the X-Y table under this novel FPGA technology. The proposed motion control IC has two modules. One module performs the functions of the motion trajectory and two position/speed controllers for the X-Y table. The other module performs the functions of two current vector controllers of permanent-magnet synchronous motor drives. The former is implemented by software using a Nios II embedded processor due to the complicated control algorithm and low-sampling-frequency control (motion trajectory and position control: less than 1 kHz). The latter is implemented by hardware in the FPGA owing to the requirements of high-sampling-frequency control (current loop: 16 kHz; PWM circuit: 4-8 MHz) but simple computation. As a result, the hardware/software codesign technology can make the motion controller of the X-Y table more compact, flexible, perform better, and less costly. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663690&sortType%3Das [...] [article] Realization of a motion control IC for X-Y table based on novel FPGA technology [texte imprimé] / Kung, Ying-Shieh, Auteur ; Rong-Fong Fung, Auteur ; Ting-Yu Tai, Auteur . - 2009 . - pp. 43 - 53. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 43 - 53 Mots-clés : field  programmable  gate  arrays;  motion  control;  permanent  magnet  motors;  synchronous  motor  drives;  system-on-chip Résumé : The novel field-programmable-gate-array (FPGA) technology is able to combine an embedded processor and an application intellectual property to be a system-on-a-programmable-chip developing environment. Therefore, this paper presents a motion control IC for the X-Y table under this novel FPGA technology. The proposed motion control IC has two modules. One module performs the functions of the motion trajectory and two position/speed controllers for the X-Y table. The other module performs the functions of two current vector controllers of permanent-magnet synchronous motor drives. The former is implemented by software using a Nios II embedded processor due to the complicated control algorithm and low-sampling-frequency control (motion trajectory and position control: less than 1 kHz). The latter is implemented by hardware in the FPGA owing to the requirements of high-sampling-frequency control (current loop: 16 kHz; PWM circuit: 4-8 MHz) but simple computation. As a result, the hardware/software codesign technology can make the motion controller of the X-Y table more compact, flexible, perform better, and less costly. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663690&sortType%3Das [...]

A bipedal locomotion planning based on virtual linear inverted pendulum mode / Motoi, N. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 54 - 61 Titre : A bipedal locomotion planning based on virtual linear inverted pendulum mode Type de document : texte imprimé Auteurs : Motoi, N., Auteur ; Suzuki, T., Auteur Année de publication : 2009 Article en page(s) : pp. 54 - 61 Note générale : elecronics Langues : Anglais (eng) Mots-clés : humanoid  robots;  legged  locomotion;  motion  control;  path  planning Résumé : In this paper, a bipedal locomotion planning based on virtual linear inverted pendulum mode (VLIPM) is proposed. In conventional methods, the desired center of gravity (COG) position and velocity are achieved by modifying the foot placement. In this research, the desired COG position and velocity are achieved while the desired foot placement is also realized. In the proposed method, the virtual modified foot placement and trajectory planning are calculated separately. VLIPM is applied to the calculation of the virtual modified foot placement. By using virtual supporting point (VSP), the difference between the virtual modified and desired foot placements is compensated. In the result, the desired foot placement is achieved as if the foot placement is in the virtual modified foot placement. Trajectory planning is applied to LIPM with VSP and 5-D polynomial. The boundary conditions of the polynomial are set to the desired COG position and velocity. In the result, the desired COG position and velocity are also obtained. Differences of the motion by different models are compensated by matching the boundary conditions of different models. By applying different models in the calculations of the foot placement and trajectory planning, the desired robot motion is realized. The walking stability of the proposed method is equivalent to that of the conventional method. The effectiveness of the proposed method is confirmed by a simulation and an experiment. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4624544&sortType%3Das [...] [article] A bipedal locomotion planning based on virtual linear inverted pendulum mode [texte imprimé] / Motoi, N., Auteur ; Suzuki, T., Auteur . - 2009 . - pp. 54 - 61. elecronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 54 - 61 Mots-clés : humanoid  robots;  legged  locomotion;  motion  control;  path  planning Résumé : In this paper, a bipedal locomotion planning based on virtual linear inverted pendulum mode (VLIPM) is proposed. In conventional methods, the desired center of gravity (COG) position and velocity are achieved by modifying the foot placement. In this research, the desired COG position and velocity are achieved while the desired foot placement is also realized. In the proposed method, the virtual modified foot placement and trajectory planning are calculated separately. VLIPM is applied to the calculation of the virtual modified foot placement. By using virtual supporting point (VSP), the difference between the virtual modified and desired foot placements is compensated. In the result, the desired foot placement is achieved as if the foot placement is in the virtual modified foot placement. Trajectory planning is applied to LIPM with VSP and 5-D polynomial. The boundary conditions of the polynomial are set to the desired COG position and velocity. In the result, the desired COG position and velocity are also obtained. Differences of the motion by different models are compensated by matching the boundary conditions of different models. By applying different models in the calculations of the foot placement and trajectory planning, the desired robot motion is realized. The walking stability of the proposed method is equivalent to that of the conventional method. The effectiveness of the proposed method is confirmed by a simulation and an experiment. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4624544&sortType%3Das [...]

Flexible controller design of bilateral grasping systems based on a multilateral control scheme / Kubo, R. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 62 - 68 Titre : Flexible controller design of bilateral grasping systems based on a multilateral control scheme Type de document : texte imprimé Auteurs : Kubo, R., Auteur ; Shimono, T., Auteur Année de publication : 2009 Article en page(s) : pp. 62 - 68 Note générale : electronics Langues : Anglais (eng) Mots-clés : control  system  synthesis;  discrete  Fourier  transforms;  flexible  manipulators;  force  control;  matrix  algebra;  observers;  position  control Résumé : This paper describes a novel bilateral grasping control system including master-slave robots with different degree of freedom. The master and slave controllers are designed based on a multilateral control scheme. Decoupling design of force and position controllers is realized by mode transformation using the discrete Fourier transform matrices and a disturbance observer. In the proposed system, a human operator manipulates two master robots, and three slave robots grasp an object cooperatively. The proposed system makes it possible to grasp an object tightly in the slave side and to transmit feeling of grasping to a human operator vividly. The validity of the proposed method is shown by numerical and experimental results. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663716&sortType%3Das [...] [article] Flexible controller design of bilateral grasping systems based on a multilateral control scheme [texte imprimé] / Kubo, R., Auteur ; Shimono, T., Auteur . - 2009 . - pp. 62 - 68. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 62 - 68 Mots-clés : control  system  synthesis;  discrete  Fourier  transforms;  flexible  manipulators;  force  control;  matrix  algebra;  observers;  position  control Résumé : This paper describes a novel bilateral grasping control system including master-slave robots with different degree of freedom. The master and slave controllers are designed based on a multilateral control scheme. Decoupling design of force and position controllers is realized by mode transformation using the discrete Fourier transform matrices and a disturbance observer. In the proposed system, a human operator manipulates two master robots, and three slave robots grasp an object cooperatively. The proposed system makes it possible to grasp an object tightly in the slave side and to transmit feeling of grasping to a human operator vividly. The validity of the proposed method is shown by numerical and experimental results. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663716&sortType%3Das [...]

Control of three-level PWM converter applied to variable-speed-type turbines / Malinowski, M. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 69 - 77 Titre : Control of three-level PWM converter applied to variable-speed-type turbines Type de document : texte imprimé Auteurs : Malinowski, M., Auteur ; Stynski, S., Auteur ; Kolomyjski, W., Auteur Année de publication : 2009 Article en page(s) : pp. 69 - 77 Note générale : electronics Langues : Anglais (eng) Mots-clés : PWM  power  convertors;  permanent  magnet  generators;  power  grids;  synchronous  generators;  wind  turbines Résumé : This paper proposes advanced control of a three-phase three-level neutral-point-clamped pulsewidth-modulated (PWM) converter connecting a permanent-magnet synchronous generator to a grid. The control scheme is mainly based on active and reactive power loops and contains the following additional blocks: virtual flux and filter-capacitor voltage estimators for sensorless operation, active damping (AD) of possible resonances in the LCL filter that connects the converter to the grid, and a PWM modulator with dc-link voltage balancing and minimization of switching losses. It is shown that the proposed control method exhibits several features such as sensorless operation, robust algorithm, minimization of switching losses, and simple tuning procedure of AD. The simulation and experimental results have proven an excellent performance and verified the validity of the proposed system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675312&sortType%3Das [...] [article] Control of three-level PWM converter applied to variable-speed-type turbines [texte imprimé] / Malinowski, M., Auteur ; Stynski, S., Auteur ; Kolomyjski, W., Auteur . - 2009 . - pp. 69 - 77. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 69 - 77 Mots-clés : PWM  power  convertors;  permanent  magnet  generators;  power  grids;  synchronous  generators;  wind  turbines Résumé : This paper proposes advanced control of a three-phase three-level neutral-point-clamped pulsewidth-modulated (PWM) converter connecting a permanent-magnet synchronous generator to a grid. The control scheme is mainly based on active and reactive power loops and contains the following additional blocks: virtual flux and filter-capacitor voltage estimators for sensorless operation, active damping (AD) of possible resonances in the LCL filter that connects the converter to the grid, and a PWM modulator with dc-link voltage balancing and minimization of switching losses. It is shown that the proposed control method exhibits several features such as sensorless operation, robust algorithm, minimization of switching losses, and simple tuning procedure of AD. The simulation and experimental results have proven an excellent performance and verified the validity of the proposed system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675312&sortType%3Das [...]

Multiphase bidirectional flyback converter topology for hybrid electric vehicles / Bhattacharya, T. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 78 - 84 Titre : Multiphase bidirectional flyback converter topology for hybrid electric vehicles Type de document : texte imprimé Auteurs : Bhattacharya, T., Auteur ; Giri, V.S., Auteur ; Mathew, K., Auteur Année de publication : 2009 Article en page(s) : pp. 78 - 84 Note générale : electronics Langues : Anglais (eng) Mots-clés : hybrid  electric  vehicles;  power  convertors;  power  transformers Résumé : For hybrid electric vehicles, the batteries and the drive dc link may be at different voltages. The batteries are at low voltage to obtain higher volumetric efficiencies, and the dc link is at higher voltage to have higher efficiency on the motor side. Therefore, a power interface between the batteries and the drive's dc link is essential. This power interface should handle power flow from battery to motor, motor to battery, external genset to battery, and grid to battery. This paper proposes a multi-power-port topology which is capable of handling multiple power sources and still maintains simplicity and features like obtaining high gain, wide load variations, lower output-current ripple, and capability of parallel-battery energy due to the modular structure. The scheme incorporates a transformer winding technique which drastically reduces the leakage inductance of the coupled inductor. The development and testing of a bidirectional flyback dc-dc converter for hybrid electric vehicle is described in this paper. Simple hysteresis voltage control is used for dc-link voltage regulation. The experimental results are presented to show the working of the proposed converter. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663959&sortType%3Das [...] [article] Multiphase bidirectional flyback converter topology for hybrid electric vehicles [texte imprimé] / Bhattacharya, T., Auteur ; Giri, V.S., Auteur ; Mathew, K., Auteur . - 2009 . - pp. 78 - 84. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 78 - 84 Mots-clés : hybrid  electric  vehicles;  power  convertors;  power  transformers Résumé : For hybrid electric vehicles, the batteries and the drive dc link may be at different voltages. The batteries are at low voltage to obtain higher volumetric efficiencies, and the dc link is at higher voltage to have higher efficiency on the motor side. Therefore, a power interface between the batteries and the drive's dc link is essential. This power interface should handle power flow from battery to motor, motor to battery, external genset to battery, and grid to battery. This paper proposes a multi-power-port topology which is capable of handling multiple power sources and still maintains simplicity and features like obtaining high gain, wide load variations, lower output-current ripple, and capability of parallel-battery energy due to the modular structure. The scheme incorporates a transformer winding technique which drastically reduces the leakage inductance of the coupled inductor. The development and testing of a bidirectional flyback dc-dc converter for hybrid electric vehicle is described in this paper. Simple hysteresis voltage control is used for dc-link voltage regulation. The experimental results are presented to show the working of the proposed converter. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4663959&sortType%3Das [...]

Development and implementation of a novel fault diagnostic and protection technique for IPM motor drives / Khan, M. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 85 - 92 Titre : Development and implementation of a novel fault diagnostic and protection technique for IPM motor drives Type de document : texte imprimé Auteurs : Khan, M., Auteur ; M. Azizur Rahman, Auteur Année de publication : 2009 Article en page(s) : pp. 85 - 92 Note générale : electronics Langues : Anglais (eng) Mots-clés : Digital  signal  processors;  fault  diagnosis;  interior  permanent-magnet  (IPM)  motor;  neural  networks;  wavelet  packet  transform  (WPT) Résumé : This paper presents the practical implementation of a novel fault diagnostic and protection scheme for the interior permanent-magnet (IPM) synchronous motors using wavelet packet transform (WPT) and artificial neural network. In the proposed technique, the line currents of different faulted and normal conditions of the IPM motor are preprocessed by the WPT. The second level WPT coefficients of line currents are used as inputs of a three-layer feedforward neural network. The proposed protection technique is successfully simulated and experimentally tested on the line-fed and inverter-fed IPM motors. The Texas Instrument 32-bit floating-point digital signal processor TMS320C31 is used for the real-time implementation of the proposed protection algorithm. The offline and online test results of both line-fed and inverter-fed IPM motors are given. These test results showed satisfactory performances of the proposed diagnostic and protection technique in terms of speed, accuracy, and reliability. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4624554&sortType%3Das [...] [article] Development and implementation of a novel fault diagnostic and protection technique for IPM motor drives [texte imprimé] / Khan, M., Auteur ; M. Azizur Rahman, Auteur . - 2009 . - pp. 85 - 92. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 85 - 92 Mots-clés : Digital  signal  processors;  fault  diagnosis;  interior  permanent-magnet  (IPM)  motor;  neural  networks;  wavelet  packet  transform  (WPT) Résumé : This paper presents the practical implementation of a novel fault diagnostic and protection scheme for the interior permanent-magnet (IPM) synchronous motors using wavelet packet transform (WPT) and artificial neural network. In the proposed technique, the line currents of different faulted and normal conditions of the IPM motor are preprocessed by the WPT. The second level WPT coefficients of line currents are used as inputs of a three-layer feedforward neural network. The proposed protection technique is successfully simulated and experimentally tested on the line-fed and inverter-fed IPM motors. The Texas Instrument 32-bit floating-point digital signal processor TMS320C31 is used for the real-time implementation of the proposed protection algorithm. The offline and online test results of both line-fed and inverter-fed IPM motors are given. These test results showed satisfactory performances of the proposed diagnostic and protection technique in terms of speed, accuracy, and reliability. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4624554&sortType%3Das [...]

Dimming control characteristics of electrodeless fluorescent lamps / Tae-Eun Jang in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 93 - 100 Titre : Dimming control characteristics of electrodeless fluorescent lamps Type de document : texte imprimé Auteurs : Tae-Eun Jang, Auteur ; Hee Jun Kim, Auteur ; Hoon Kim, Auteur Année de publication : 2009 Article en page(s) : pp. 93 - 100 Note générale : electronics Langues : Anglais (eng) Mots-clés : fluorescent  lamps;  frequency  control;  voltage  control Résumé : The study described in this paper was undertaken to identify the dimming control characteristics of the electrodeless fluorescent lamp. First, to accomplish this, a model of the electrodeless fluorescent lamp was made. Two kinds of dimming control methods, the variable switching frequency control method and the variable dc-link voltage control method, were then applied to the resulting model of the lamp, after which the results of the application of the two methods on the lamp model were compared. The hypotheses that were initially formulated were confirmed by the results of the experiment that was conducted on the 100-W ENDURA-type electrodeless fluorescent lamp. The results show that the lamp's dimming control of the switching frequency control is nonlinear and that of the variable dc-link voltage is linear over a wide range, and the theoretical value obtained by the proposed model well matches that of the experimental value. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682702&sortType%3Das [...] [article] Dimming control characteristics of electrodeless fluorescent lamps [texte imprimé] / Tae-Eun Jang, Auteur ; Hee Jun Kim, Auteur ; Hoon Kim, Auteur . - 2009 . - pp. 93 - 100. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 93 - 100 Mots-clés : fluorescent  lamps;  frequency  control;  voltage  control Résumé : The study described in this paper was undertaken to identify the dimming control characteristics of the electrodeless fluorescent lamp. First, to accomplish this, a model of the electrodeless fluorescent lamp was made. Two kinds of dimming control methods, the variable switching frequency control method and the variable dc-link voltage control method, were then applied to the resulting model of the lamp, after which the results of the application of the two methods on the lamp model were compared. The hypotheses that were initially formulated were confirmed by the results of the experiment that was conducted on the 100-W ENDURA-type electrodeless fluorescent lamp. The results show that the lamp's dimming control of the switching frequency control is nonlinear and that of the variable dc-link voltage is linear over a wide range, and the theoretical value obtained by the proposed model well matches that of the experimental value. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682702&sortType%3Das [...]

Three-dimensional feedforward space vector modulation applied to multilevel diode-clamped converters / Leon, J.I. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 101 - 109 Titre : Three-dimensional feedforward space vector modulation applied to multilevel diode-clamped converters Type de document : texte imprimé Auteurs : Leon, J.I., Auteur ; Vazquez, S., Auteur ; Portillo, R., Auteur Année de publication : 2009 Article en page(s) : pp. 101 - 109 Note générale : electronics Langues : Anglais (eng) Mots-clés : modulation;  multilevel  systems;  voltage  Control;  multilevel  systems;  voltage  control Résumé : Simplified space vector modulation (SVM) techniques for multilevel converters are being developed to improve factors such as the computational cost, number of commutations, and voltage distortion. The feedforward SVM presented in this paper takes into account the actual DC capacitor voltage unbalance of the multilevel power converter. The resulting technique is a low-cost generalized feedforward 3-D SVM method and is particularized for three-phase multilevel diode-clamped converters. This new modulation technique can be applied to topologies where the gamma component may not be zero. The computational cost of the proposed method is similar to those of comparable methods, and it is independent of the number of levels of the power converter. Experimental results using a three-level diode-clamped converter are presented to validate the proposed modulation technique. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559377&sortType%3Das [...] [article] Three-dimensional feedforward space vector modulation applied to multilevel diode-clamped converters [texte imprimé] / Leon, J.I., Auteur ; Vazquez, S., Auteur ; Portillo, R., Auteur . - 2009 . - pp. 101 - 109. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 101 - 109 Mots-clés : modulation;  multilevel  systems;  voltage  Control;  multilevel  systems;  voltage  control Résumé : Simplified space vector modulation (SVM) techniques for multilevel converters are being developed to improve factors such as the computational cost, number of commutations, and voltage distortion. The feedforward SVM presented in this paper takes into account the actual DC capacitor voltage unbalance of the multilevel power converter. The resulting technique is a low-cost generalized feedforward 3-D SVM method and is particularized for three-phase multilevel diode-clamped converters. This new modulation technique can be applied to topologies where the gamma component may not be zero. The computational cost of the proposed method is similar to those of comparable methods, and it is independent of the number of levels of the power converter. Experimental results using a three-level diode-clamped converter are presented to validate the proposed modulation technique. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559377&sortType%3Das [...]

Three-phase rectifier with active current injection and high efficiency / Vazquez, N. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 110 - 119 Titre : Three-phase rectifier with active current injection and high efficiency Type de document : texte imprimé Auteurs : Vazquez, N., Auteur ; Rodriguez, H., Auteur ; Hernandez, C., Auteur Année de publication : 2009 Article en page(s) : pp. 110 - 119 Note générale : electronics Langues : Anglais (eng) Mots-clés : harmonic  distortion;  invertors;  power  factor;  rectifying  circuits;  switching  circuits Résumé : An active current injection network for a three-phase rectifier is proposed. The proposed circuit uses three bidirectional switches operating at low frequency and a half-bridge inverter operating at high frequency. It also uses an inductor in order to make the current modulation. Because only 3.7% of the total power delivered to the load is processed by the injection network, the proposed converter offers high efficiency, and not only a high power factor is obtained but also the total harmonic distortion is reduced. Operation, analysis, simulation, and experimental results are shown in this paper. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675307&sortType%3Das [...] [article] Three-phase rectifier with active current injection and high efficiency [texte imprimé] / Vazquez, N., Auteur ; Rodriguez, H., Auteur ; Hernandez, C., Auteur . - 2009 . - pp. 110 - 119. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 110 - 119 Mots-clés : harmonic  distortion;  invertors;  power  factor;  rectifying  circuits;  switching  circuits Résumé : An active current injection network for a three-phase rectifier is proposed. The proposed circuit uses three bidirectional switches operating at low frequency and a half-bridge inverter operating at high frequency. It also uses an inductor in order to make the current modulation. Because only 3.7% of the total power delivered to the load is processed by the injection network, the proposed converter offers high efficiency, and not only a high power factor is obtained but also the total harmonic distortion is reduced. Operation, analysis, simulation, and experimental results are shown in this paper. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675307&sortType%3Das [...]

Full utilization of the inverter in split-phase drives by means of a dual three-phase space vector classification algorithm / Yazdani, D. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 120 - 129 Titre : Full utilization of the inverter in split-phase drives by means of a dual three-phase space vector classification algorithm Type de document : texte imprimé Auteurs : Yazdani, D., Auteur ; Khajehoddin, S.A., Auteur ; Bakhshai, A., Auteur Année de publication : 2009 Article en page(s) : pp. 120 - 129 Note générale : electronic Langues : Anglais (eng) Mots-clés : PWM  invertors;  induction  motor  drives;  machine  control;  voltage  control Résumé : A simple and effective space vector pulsewidth-modulation technique for six-phase voltage-source-inverter-fed split-phase induction motors is presented in this paper. The approach employs dual three-phase space vector modulators equipped with overmodulation schemes that compensate for the voltage gain reduction due to the use of two independently controlled three-phase inverters. It secures full control of the voltage gain up to the maximum achievable gain with negligible low-order harmonics and utilizes a simple classification algorithm for the implementation of the space vector modulation (SVM) in both linear and overmodulation modes. Experimental results are provided to verify the validity of the proposed SVM split-phase approach. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4555651&sortType%3Das [...] [article] Full utilization of the inverter in split-phase drives by means of a dual three-phase space vector classification algorithm [texte imprimé] / Yazdani, D., Auteur ; Khajehoddin, S.A., Auteur ; Bakhshai, A., Auteur . - 2009 . - pp. 120 - 129. electronic Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 120 - 129 Mots-clés : PWM  invertors;  induction  motor  drives;  machine  control;  voltage  control Résumé : A simple and effective space vector pulsewidth-modulation technique for six-phase voltage-source-inverter-fed split-phase induction motors is presented in this paper. The approach employs dual three-phase space vector modulators equipped with overmodulation schemes that compensate for the voltage gain reduction due to the use of two independently controlled three-phase inverters. It secures full control of the voltage gain up to the maximum achievable gain with negligible low-order harmonics and utilizes a simple classification algorithm for the implementation of the space vector modulation (SVM) in both linear and overmodulation modes. Experimental results are provided to verify the validity of the proposed SVM split-phase approach. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4555651&sortType%3Das [...]

Static var compensator and active power filter with power injection capability, using 27-level inverters and photovoltaic cells / Flores, P. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 130 - 138 Titre : Static var compensator and active power filter with power injection capability, using 27-level inverters and photovoltaic cells Type de document : texte imprimé Auteurs : Flores, P., Auteur ; Dixon, J., Auteur ; Ortuzar, M., Auteur Année de publication : 2009 Article en page(s) : pp. 130 - 138 Note générale : electronic Langues : Anglais (eng) Mots-clés : active  filters;  invertors;  photovoltaic  cells;  power  filters;  static  VAr  compensators Résumé : An active power filter and static var compensator with active power generation capability has been implemented using a 27-level inverter. Each phase of this inverter is composed of three ldquoHrdquo bridges, all of them connected to the same dc link and their outputs connected through output transformers scaled in the power of three. The filter can compensate load currents with a high harmonic content and a low power factor, resulting in sinusoidal currents from the source. To take advantage of this compensator, the dc link, instead of a capacitor, uses a battery pack, which is charged from a photovoltaic array connected to the batteries through a maximum power point tracker. This combined topology make it possible to produce active power and even to feed the loads during prolonged voltage outages. Simulation results for this application are shown, and some experiments with a 3-kVA device are displayed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4735594&sortType%3Das [...] [article] Static var compensator and active power filter with power injection capability, using 27-level inverters and photovoltaic cells [texte imprimé] / Flores, P., Auteur ; Dixon, J., Auteur ; Ortuzar, M., Auteur . - 2009 . - pp. 130 - 138. electronic Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 130 - 138 Mots-clés : active  filters;  invertors;  photovoltaic  cells;  power  filters;  static  VAr  compensators Résumé : An active power filter and static var compensator with active power generation capability has been implemented using a 27-level inverter. Each phase of this inverter is composed of three ldquoHrdquo bridges, all of them connected to the same dc link and their outputs connected through output transformers scaled in the power of three. The filter can compensate load currents with a high harmonic content and a low power factor, resulting in sinusoidal currents from the source. To take advantage of this compensator, the dc link, instead of a capacitor, uses a battery pack, which is charged from a photovoltaic array connected to the batteries through a maximum power point tracker. This combined topology make it possible to produce active power and even to feed the loads during prolonged voltage outages. Simulation results for this application are shown, and some experiments with a 3-kVA device are displayed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4735594&sortType%3Das [...]

Solid oxide fuel cell modeling / Gebregergis, A. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 139 - 148 Titre : Solid oxide fuel cell modeling Type de document : texte imprimé Auteurs : Gebregergis, A., Auteur ; Pillay, P., Auteur ; Bhattacharyya, D., Auteur Année de publication : 2009 Article en page(s) : pp. 139 - 148 Note générale : electronic Langues : Anglais (eng) Mots-clés : equivalent  circuits;  lumped  parameter  networks;  real-time  systems;  solid  oxide  fuel  cells Résumé : This paper discusses the modeling of a solid oxide fuel cell using both lumped and distributed modeling approaches. In particular, the focus of this paper is on the development of a computationally efficient lumped-parameter model for real-time emulation and control. The performance of this model is compared with a detailed distributed model and experimental results. The fundamental relations that govern a fuel cell operation are utilized in both approaches. However, the partial pressure of the species (fuel, air, and water) in the distributed model is assumed to vary through the length of the fuel cell. The lumped model approach uses the partial pressure of the species at the exit point of the fuel cell. The partial pressure of the species is represented by an equivalent RC circuit in the lumped model. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682693&sortType%3Das [...] [article] Solid oxide fuel cell modeling [texte imprimé] / Gebregergis, A., Auteur ; Pillay, P., Auteur ; Bhattacharyya, D., Auteur . - 2009 . - pp. 139 - 148. electronic Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 139 - 148 Mots-clés : equivalent  circuits;  lumped  parameter  networks;  real-time  systems;  solid  oxide  fuel  cells Résumé : This paper discusses the modeling of a solid oxide fuel cell using both lumped and distributed modeling approaches. In particular, the focus of this paper is on the development of a computationally efficient lumped-parameter model for real-time emulation and control. The performance of this model is compared with a detailed distributed model and experimental results. The fundamental relations that govern a fuel cell operation are utilized in both approaches. However, the partial pressure of the species (fuel, air, and water) in the distributed model is assumed to vary through the length of the fuel cell. The lumped model approach uses the partial pressure of the species at the exit point of the fuel cell. The partial pressure of the species is represented by an equivalent RC circuit in the lumped model. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682693&sortType%3Das [...]

Multilevel inverter for grid-connected PV system employing digital PI controller / Selvaraj, J. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 149 - 158 Titre : Multilevel inverter for grid-connected PV system employing digital PI controller Type de document : texte imprimé Auteurs : Selvaraj, J., Auteur ; Rahim, N.A., Auteur Année de publication : 2009 Article en page(s) : pp. 149 - 158 Note générale : electronics Langues : Anglais (eng) Mots-clés : PI  control;  PWM  invertors;  digital  control;  electric  current  control;  harmonic  distortion;  photovoltaic  power  systems;  power  conversion  harmonics;  power  factor;  power  generation  control;  power  grids Résumé : This paper presents a single-phase five-level photovoltaic (PV) inverter topology for grid-connected PV systems with a novel pulsewidth-modulated (PWM) control scheme. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signal were used to generate PWM signals for the switches. A digital proportional-integral current control algorithm is implemented in DSP TMS320F2812 to keep the current injected into the grid sinusoidal and to have high dynamic performance with rapidly changing atmospheric conditions. The inverter offers much less total harmonic distortion and can operate at near-unity power factor. The proposed system is verified through simulation and is implemented in a prototype, and the experimental results are compared with that with the conventional single-phase three-level grid-connected PWM inverter. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559384&sortType%3Das [...] [article] Multilevel inverter for grid-connected PV system employing digital PI controller [texte imprimé] / Selvaraj, J., Auteur ; Rahim, N.A., Auteur . - 2009 . - pp. 149 - 158. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 149 - 158 Mots-clés : PI  control;  PWM  invertors;  digital  control;  electric  current  control;  harmonic  distortion;  photovoltaic  power  systems;  power  conversion  harmonics;  power  factor;  power  generation  control;  power  grids Résumé : This paper presents a single-phase five-level photovoltaic (PV) inverter topology for grid-connected PV systems with a novel pulsewidth-modulated (PWM) control scheme. Two reference signals identical to each other with an offset equivalent to the amplitude of the triangular carrier signal were used to generate PWM signals for the switches. A digital proportional-integral current control algorithm is implemented in DSP TMS320F2812 to keep the current injected into the grid sinusoidal and to have high dynamic performance with rapidly changing atmospheric conditions. The inverter offers much less total harmonic distortion and can operate at near-unity power factor. The proposed system is verified through simulation and is implemented in a prototype, and the experimental results are compared with that with the conventional single-phase three-level grid-connected PWM inverter. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559384&sortType%3Das [...]

A study on straight-line tracking and posture control in electric bicycle / Tanaka, Y. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 159 - 168 Titre : A study on straight-line tracking and posture control in electric bicycle Type de document : texte imprimé Auteurs : Tanaka, Y., Auteur ; Murakami, T., Auteur Année de publication : 2009 Article en page(s) : pp. 159 - 168 Note générale : electronics Langues : Anglais (eng) Mots-clés : bicycles;  electric  vehicles;  motion  control;  nonlinear  control  systems;  position  control;  velocity  control Résumé : The development of automatic control for driving a bicycle is a challenging theme and is expected to be a human assist system. Previously, an acceleration-based method for stabilizing bicycle posture was proposed by the authors. In the experiments with this controller, the posture of the bicycle might be stabilized, but it is impossible to run on the desired trajectory, because there is no consideration with respect to a trajectory control. For the sake of expanding this system into more sophisticated equipment, a realization of the trajectory control for the bicycle is important. From the viewpoint of an assist system for human motion, a unified control of posture and trajectory brings a sophisticated function to a bicycle, and a high-performance bicycle is expected to be a convenient vehicle, similar to a small car. This paper proposes two strategies to stabilize bicycle posture and trajectory control that realizes a straight-line tracking: one is a lateral velocity controller, and the other is a steering function controller. The validity of the proposed approaches is evaluated by simulations and experiments. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559385&sortType%3Das [...] [article] A study on straight-line tracking and posture control in electric bicycle [texte imprimé] / Tanaka, Y., Auteur ; Murakami, T., Auteur . - 2009 . - pp. 159 - 168. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 159 - 168 Mots-clés : bicycles;  electric  vehicles;  motion  control;  nonlinear  control  systems;  position  control;  velocity  control Résumé : The development of automatic control for driving a bicycle is a challenging theme and is expected to be a human assist system. Previously, an acceleration-based method for stabilizing bicycle posture was proposed by the authors. In the experiments with this controller, the posture of the bicycle might be stabilized, but it is impossible to run on the desired trajectory, because there is no consideration with respect to a trajectory control. For the sake of expanding this system into more sophisticated equipment, a realization of the trajectory control for the bicycle is important. From the viewpoint of an assist system for human motion, a unified control of posture and trajectory brings a sophisticated function to a bicycle, and a high-performance bicycle is expected to be a convenient vehicle, similar to a small car. This paper proposes two strategies to stabilize bicycle posture and trajectory control that realizes a straight-line tracking: one is a lateral velocity controller, and the other is a steering function controller. The validity of the proposed approaches is evaluated by simulations and experiments. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559385&sortType%3Das [...]

An RMRAC current regulator for permanent-magnet synchronous motor based on statistical model interpretation / HongZhe Jin in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 169 - 177 Titre : An RMRAC current regulator for permanent-magnet synchronous motor based on statistical model interpretation Type de document : texte imprimé Auteurs : HongZhe Jin, Auteur ; Jang Myung Lee, Auteur Année de publication : 2009 Article en page(s) : pp. 169 - 177 Note générale : electronics Langues : Anglais (eng) Mots-clés : feedback;  feedforward;  machine  control;  model  reference  adaptive  control  systems;  permanent  magnet  motors;  robust  control;  statistical  analysis;  synchronous  motors Résumé : A new robust model reference adaptive control (RMRAC) scheme for the current regulation of a permanent-magnet synchronous motor (PMSM) is proposed in a synchronous frame, which is completely free from the control performance degradation caused by parameter uncertainties. The current regulator of the PMSM is the innermost loop of its electromechanical driving system and plays an important role in the control hierarchy. When the PMSM runs precisely at high speeds, the cross-coupling terms must be compensated for. In the proposed RMRAC, the input signal is composed of the control voltage obtained by the model reference adaptive control (MRAC) law and the output of the disturbance estimator. The gains of the feedforward and feedback controllers are estimated by the proposed modified gradient method, where the system disturbances are filtered out by the estimated current regulation error. A voltage corresponding to the estimated system disturbances is fed forward to the control input in order to filter out the disturbances. The proposed method compensates the cross-coupling terms in a synchronous current model regardless of parameter variations. It also shows a good real-time performance due to the simplicity of control structure. Through simulations and real experiments, the efficiency of the proposed method is verified. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4566077&sortType%3Das [...] [article] An RMRAC current regulator for permanent-magnet synchronous motor based on statistical model interpretation [texte imprimé] / HongZhe Jin, Auteur ; Jang Myung Lee, Auteur . - 2009 . - pp. 169 - 177. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 169 - 177 Mots-clés : feedback;  feedforward;  machine  control;  model  reference  adaptive  control  systems;  permanent  magnet  motors;  robust  control;  statistical  analysis;  synchronous  motors Résumé : A new robust model reference adaptive control (RMRAC) scheme for the current regulation of a permanent-magnet synchronous motor (PMSM) is proposed in a synchronous frame, which is completely free from the control performance degradation caused by parameter uncertainties. The current regulator of the PMSM is the innermost loop of its electromechanical driving system and plays an important role in the control hierarchy. When the PMSM runs precisely at high speeds, the cross-coupling terms must be compensated for. In the proposed RMRAC, the input signal is composed of the control voltage obtained by the model reference adaptive control (MRAC) law and the output of the disturbance estimator. The gains of the feedforward and feedback controllers are estimated by the proposed modified gradient method, where the system disturbances are filtered out by the estimated current regulation error. A voltage corresponding to the estimated system disturbances is fed forward to the control input in order to filter out the disturbances. The proposed method compensates the cross-coupling terms in a synchronous current model regardless of parameter variations. It also shows a good real-time performance due to the simplicity of control structure. Through simulations and real experiments, the efficiency of the proposed method is verified. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4566077&sortType%3Das [...]

Adaptive control of two-axis motion control system using interval type-2 fuzzy neural network / Lin, Faa-Jeng in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 178 - 193 Titre : Adaptive control of two-axis motion control system using interval type-2 fuzzy neural network Type de document : texte imprimé Auteurs : Lin, Faa-Jeng, Auteur ; Po-Huan Chou, Auteur Année de publication : 2009 Article en page(s) : pp. 178 - 193 Note générale : electronics Langues : Anglais (eng) Mots-clés : Lyapunov  methods;  adaptive  control;  angular  velocity  control;  digital  control;  digital  signal  processing  chips;  fuzzy  control;  machine  control;  neurocontrollers;  permanent  magnet  motors;  robust  control;  synchronous  motors Résumé : An interval type-2 fuzzy neural network (IT2FNN) control system is proposed for the precision control of a two-axis motion control system in this paper. The adopted two-axis motion control system is composed of two permanent-magnet linear synchronous motors. In the proposed IT2FNN control system, an IT2FNN, which combines the merits of an interval type-2 fuzzy logic system and a neural network, is developed to approximate an unknown dynamic function. Moreover, adaptive learning algorithms that can train the parameters of the IT2FNN online are derived using the Lyapunov stability theorem. Furthermore, a robust compensator is proposed to confront the uncertainties, including a minimum reconstructed error, optimal parameter vectors, and higher order terms in Taylor series. To relax the requirement for the value of the lumped uncertainty in the robust controller, an adaptive lumped uncertainty estimation law is also investigated. Last, the proposed control algorithms are implemented in a TMS320C32 digital-signal-processor-based control computer. From the simulated and experimental results, the contour tracking performance of the two-axis motion control system is significantly improved, and the robustness can be obtained as well using the proposed IT2FNN control system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675304&sortType%3Das [...] [article] Adaptive control of two-axis motion control system using interval type-2 fuzzy neural network [texte imprimé] / Lin, Faa-Jeng, Auteur ; Po-Huan Chou, Auteur . - 2009 . - pp. 178 - 193. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 178 - 193 Mots-clés : Lyapunov  methods;  adaptive  control;  angular  velocity  control;  digital  control;  digital  signal  processing  chips;  fuzzy  control;  machine  control;  neurocontrollers;  permanent  magnet  motors;  robust  control;  synchronous  motors Résumé : An interval type-2 fuzzy neural network (IT2FNN) control system is proposed for the precision control of a two-axis motion control system in this paper. The adopted two-axis motion control system is composed of two permanent-magnet linear synchronous motors. In the proposed IT2FNN control system, an IT2FNN, which combines the merits of an interval type-2 fuzzy logic system and a neural network, is developed to approximate an unknown dynamic function. Moreover, adaptive learning algorithms that can train the parameters of the IT2FNN online are derived using the Lyapunov stability theorem. Furthermore, a robust compensator is proposed to confront the uncertainties, including a minimum reconstructed error, optimal parameter vectors, and higher order terms in Taylor series. To relax the requirement for the value of the lumped uncertainty in the robust controller, an adaptive lumped uncertainty estimation law is also investigated. Last, the proposed control algorithms are implemented in a TMS320C32 digital-signal-processor-based control computer. From the simulated and experimental results, the contour tracking performance of the two-axis motion control system is significantly improved, and the robustness can be obtained as well using the proposed IT2FNN control system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675304&sortType%3Das [...]

PWM method to eliminate power sources in a nonredundant 27-level inverter for machine drive applications / Rotella, M. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 194 - 201 Titre : PWM method to eliminate power sources in a nonredundant 27-level inverter for machine drive applications Type de document : texte imprimé Auteurs : Rotella, M., Auteur ; Penailillo, G., Auteur ; Pereda, J., Auteur Année de publication : 2009 Article en page(s) : pp. 194 - 201 Note générale : electronics Langues : Anglais (eng) Mots-clés : PWM  power  convertors;  digital  signal  processing  chips;  electric  drives;  electric  machines Résumé : A nonredundant three-stage 27-level inverter using ldquoHrdquo converters is analyzed for medium- and high-power machine drive applications. The main advantage of this converter is the optimization of levels with a minimum number of semiconductors. However, the system needs six bidirectional and isolated power supplies and three more unidirectional if the machine is not using regenerative braking. In this paper, these nine power supplies are reduced to only four, all of them unidirectional, using three strategies: 1) the utilization of independent and isolated windings for each phase of the motor; 2) the utilization of independent input transformers; and 3) the most important of them, the application of special pulsewidth modulation (PWM) strategies on the 27-level converter, to keep positive average power at the medium power bridges and zero average power at the low-power bridges. The generation of this PWM and control of this multiconverter was implemented using DSP controllers, which give flexibility to the system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4735595&sortType%3Das [...] [article] PWM method to eliminate power sources in a nonredundant 27-level inverter for machine drive applications [texte imprimé] / Rotella, M., Auteur ; Penailillo, G., Auteur ; Pereda, J., Auteur . - 2009 . - pp. 194 - 201. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 194 - 201 Mots-clés : PWM  power  convertors;  digital  signal  processing  chips;  electric  drives;  electric  machines Résumé : A nonredundant three-stage 27-level inverter using ldquoHrdquo converters is analyzed for medium- and high-power machine drive applications. The main advantage of this converter is the optimization of levels with a minimum number of semiconductors. However, the system needs six bidirectional and isolated power supplies and three more unidirectional if the machine is not using regenerative braking. In this paper, these nine power supplies are reduced to only four, all of them unidirectional, using three strategies: 1) the utilization of independent and isolated windings for each phase of the motor; 2) the utilization of independent input transformers; and 3) the most important of them, the application of special pulsewidth modulation (PWM) strategies on the 27-level converter, to keep positive average power at the medium power bridges and zero average power at the low-power bridges. The generation of this PWM and control of this multiconverter was implemented using DSP controllers, which give flexibility to the system. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4735595&sortType%3Das [...]

Novel modeling and damping technique for hybrid stepper motor / Tsui, K.W.-H. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 202 - 211 Titre : Novel modeling and damping technique for hybrid stepper motor Type de document : texte imprimé Auteurs : Tsui, K.W.-H., Auteur ; Cheung, N. C., Auteur ; Yuen, K.C.-W., Auteur Année de publication : 2009 Article en page(s) : pp. 202 - 211 Note générale : electronics Langues : Anglais (eng) Mots-clés : digital  control;  machine  control;  open  loop  systems;  stepping  motors Résumé : It is well known that commercial hybrid stepper system has one or more low-speed resonant points. However, this characteristic cannot be accurately modeled without high-order equations or complicated measurement of motor parameters. In this paper, a novel approach is proposed to model the behavior of a commercial 1.8deg hybrid stepper motor accurately and efficiently. Also, model-based damping algorithms for both open-loop control and servo control are proposed. Simulation and experimental results show that the proposed algorithms can effectively eliminate low-speed resonance and vibration of the stepper system. The algorithms are efficient enough to be implemented on commercial DSP-based controllers without sacrificing motion control performance. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4667637&sortType%3Das [...] [article] Novel modeling and damping technique for hybrid stepper motor [texte imprimé] / Tsui, K.W.-H., Auteur ; Cheung, N. C., Auteur ; Yuen, K.C.-W., Auteur . - 2009 . - pp. 202 - 211. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 202 - 211 Mots-clés : digital  control;  machine  control;  open  loop  systems;  stepping  motors Résumé : It is well known that commercial hybrid stepper system has one or more low-speed resonant points. However, this characteristic cannot be accurately modeled without high-order equations or complicated measurement of motor parameters. In this paper, a novel approach is proposed to model the behavior of a commercial 1.8deg hybrid stepper motor accurately and efficiently. Also, model-based damping algorithms for both open-loop control and servo control are proposed. Simulation and experimental results show that the proposed algorithms can effectively eliminate low-speed resonance and vibration of the stepper system. The algorithms are efficient enough to be implemented on commercial DSP-based controllers without sacrificing motion control performance. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4667637&sortType%3Das [...]

Power quality disturbance classification using fuzzy C-means algorithm and adaptive particle swarm optimization / Biswal, B. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 212 - 220 Titre : Power quality disturbance classification using fuzzy C-means algorithm and adaptive particle swarm optimization Type de document : texte imprimé Auteurs : Biswal, B., Auteur ; Dash, P.K., Auteur ; Panigrahi, K.B., Auteur Année de publication : 2009 Article en page(s) : pp. 212 - 220 Note générale : electronics Langues : Anglais (eng) Mots-clés : feature  extraction;  fuzzy  set  theory;  genetic  algorithms;  particle  swarm  optimisation;  pattern  classification;  pattern  clustering;  power  supply  quality Résumé : This paper presents a new approach for the visual localization, detection, and classification of various nonstationary power signals using a variety of windowing techniques. Among the various windows used earlier like sine, cosine, tangent, hyperbolic tangent, Gaussian, bi-Gaussian, and complex, the modified Gaussian window is found to provide excellent normalized frequency contours of the power signal disturbances suitable for accurate detection, localization, and classification. Various nonstationary power signals are processed through the generalized S-transform with modified Gaussian window to generate time-frequency contours for extracting relevant features for pattern classification. The extracted features are clustered using fuzzy C-means algorithm, and finally, the algorithm is extended using either particle swarm optimization or genetic algorithm to refine the cluster centers. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559369&sortType%3Das [...] [article] Power quality disturbance classification using fuzzy C-means algorithm and adaptive particle swarm optimization [texte imprimé] / Biswal, B., Auteur ; Dash, P.K., Auteur ; Panigrahi, K.B., Auteur . - 2009 . - pp. 212 - 220. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 212 - 220 Mots-clés : feature  extraction;  fuzzy  set  theory;  genetic  algorithms;  particle  swarm  optimisation;  pattern  classification;  pattern  clustering;  power  supply  quality Résumé : This paper presents a new approach for the visual localization, detection, and classification of various nonstationary power signals using a variety of windowing techniques. Among the various windows used earlier like sine, cosine, tangent, hyperbolic tangent, Gaussian, bi-Gaussian, and complex, the modified Gaussian window is found to provide excellent normalized frequency contours of the power signal disturbances suitable for accurate detection, localization, and classification. Various nonstationary power signals are processed through the generalized S-transform with modified Gaussian window to generate time-frequency contours for extracting relevant features for pattern classification. The extracted features are clustered using fuzzy C-means algorithm, and finally, the algorithm is extended using either particle swarm optimization or genetic algorithm to refine the cluster centers. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559369&sortType%3Das [...]

New dual sustaining driver using two different energy recovery circuits for large-sized plasma display panels (PDPs) / Yi, Kang-Hyun in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 221 - 230 Titre : New dual sustaining driver using two different energy recovery circuits for large-sized plasma display panels (PDPs) Type de document : texte imprimé Auteurs : Yi, Kang-Hyun, Auteur ; Seong-Wook Choi, Auteur ; Moon, Gun-Woo, Auteur Année de publication : 2009 Article en page(s) : pp. 221 - 230 Note générale : electronics Langues : Anglais (eng) Mots-clés : bridge  circuits;  driver  circuits;  invertors;  plasma  displays Résumé : A new dual sustaining driver using two different energy recovery circuits (ERCs) for large-sized plasma display panels (PDPs) is proposed. The proposed sustaining driver has two H-bridge inverters to be used in splitting a panel into two. Two ERCs are employed to compensate energy for charging or discharging the panel. When PDPs with the two divided panels are driven by the proposed driver, there are good uniformity in gas discharge and reduction of power consumption by the two different ERCs used in charging and discharging the panel. As results, the proposed sustaining driver has low conduction loss, diminished switching loss of all main power switches, and decrease of reactive power consumption for recovering energy. Moreover, production cost can be reduced because of the simplified ERC for discharging the panel and no additional driving circuits. To verify the operation of the proposed circuit, experimental results will be shown by using a 42-in panel. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4526223&sortType%3Das [...] [article] New dual sustaining driver using two different energy recovery circuits for large-sized plasma display panels (PDPs) [texte imprimé] / Yi, Kang-Hyun, Auteur ; Seong-Wook Choi, Auteur ; Moon, Gun-Woo, Auteur . - 2009 . - pp. 221 - 230. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 221 - 230 Mots-clés : bridge  circuits;  driver  circuits;  invertors;  plasma  displays Résumé : A new dual sustaining driver using two different energy recovery circuits (ERCs) for large-sized plasma display panels (PDPs) is proposed. The proposed sustaining driver has two H-bridge inverters to be used in splitting a panel into two. Two ERCs are employed to compensate energy for charging or discharging the panel. When PDPs with the two divided panels are driven by the proposed driver, there are good uniformity in gas discharge and reduction of power consumption by the two different ERCs used in charging and discharging the panel. As results, the proposed sustaining driver has low conduction loss, diminished switching loss of all main power switches, and decrease of reactive power consumption for recovering energy. Moreover, production cost can be reduced because of the simplified ERC for discharging the panel and no additional driving circuits. To verify the operation of the proposed circuit, experimental results will be shown by using a 42-in panel. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4526223&sortType%3Das [...]

Vision-servo system for automated cell injection / Zhang, Yi in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 231 - 238 Titre : Vision-servo system for automated cell injection Type de document : texte imprimé Auteurs : Zhang, Yi, Auteur ; Tan, Kok Kiong, Auteur ; Sunan, Huang, Auteur Année de publication : 2009 Article en page(s) : pp. 231 - 238 Note générale : electronics Langues : Anglais (eng) Mots-clés : biological  techniques;  computer  vision;  medical  control  systems;  microactuators;  micromanipulators;  servomechanisms Résumé : Recent developments in nuclear reprogramming and intracytoplasmic sperm injection reflect an increasing need for more advanced and automatic micromanipulation technologies. In this paper, we present an automatic cell injection system, which is capable of visually monitoring the injecting process and controlling the microactuators. Traditionally, cell injection was manually operated, and it was laborious, time consuming, of low accuracy, and prone to contamination due to the handling requirements. An automatic and efficient strategy is required to eliminate these drawbacks. In this paper, a system is developed where the injection process is monitored and controlled automatically via integration of a vision system to an injector manipulation system. The cell is located, and the pipette is positioned and driven by the algorithm to achieve effective penetration. The precision achieved is physically proven to be within a good tolerance range. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4526224&sortType%3Das [...] [article] Vision-servo system for automated cell injection [texte imprimé] / Zhang, Yi, Auteur ; Tan, Kok Kiong, Auteur ; Sunan, Huang, Auteur . - 2009 . - pp. 231 - 238. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 231 - 238 Mots-clés : biological  techniques;  computer  vision;  medical  control  systems;  microactuators;  micromanipulators;  servomechanisms Résumé : Recent developments in nuclear reprogramming and intracytoplasmic sperm injection reflect an increasing need for more advanced and automatic micromanipulation technologies. In this paper, we present an automatic cell injection system, which is capable of visually monitoring the injecting process and controlling the microactuators. Traditionally, cell injection was manually operated, and it was laborious, time consuming, of low accuracy, and prone to contamination due to the handling requirements. An automatic and efficient strategy is required to eliminate these drawbacks. In this paper, a system is developed where the injection process is monitored and controlled automatically via integration of a vision system to an injector manipulation system. The cell is located, and the pipette is positioned and driven by the algorithm to achieve effective penetration. The precision achieved is physically proven to be within a good tolerance range. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4526224&sortType%3Das [...]

A complex space vector approach to rotor temperature estimation for line-connected induction machines with impaired cooling / Zhi Gao in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 239 - 247 Titre : A complex space vector approach to rotor temperature estimation for line-connected induction machines with impaired cooling Type de document : texte imprimé Auteurs : Zhi Gao, Auteur ; Habetler, Thomas G, Auteur ; Harley, R.G., Auteur Année de publication : 2009 Article en page(s) : pp. 239 - 247 Note générale : electronics Langues : Anglais (eng) Mots-clés : asynchronous  machines;  condition  monitoring;  cooling;  fast  Fourier  transforms;  overvoltage  protection;  relay  protection;  relays;  rotors;  vectors Résumé : Thermal models used in overload protection relays often fail to predict the rotor temperature for motors with impaired cooling conditions. In this case, the temperature estimated from the rotor resistance can be used as an indicator of the motor's cooling capability. However, this estimated rotor temperature is often corrupted by estimation error due to the asymmetry in the power supply. A detailed analysis of the trajectories of the complex current and voltage space vectors in a synchronous reference frame is presented in this paper, and the negative sequence fundamental frequency components are identified as the major cause of the estimation error. Based on this analysis, a fast and efficient algorithm is proposed to calculate the rotor temperature for line-connected induction machines. By applying the Goertzel algorithm to the complex current and voltage space vectors, constructed directly from the motor terminal measurements, the positive sequence fundamental frequency components are extracted, and the rotor temperature is then estimated with significantly reduced estimation error. Compared to the conventional scheme based on the fast Fourier transform, the proposed algorithm is faster and more efficient, and is therefore more suitable for implementation on a low-cost hardware platform. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675302&sortType%3Das [...] [article] A complex space vector approach to rotor temperature estimation for line-connected induction machines with impaired cooling [texte imprimé] / Zhi Gao, Auteur ; Habetler, Thomas G, Auteur ; Harley, R.G., Auteur . - 2009 . - pp. 239 - 247. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 239 - 247 Mots-clés : asynchronous  machines;  condition  monitoring;  cooling;  fast  Fourier  transforms;  overvoltage  protection;  relay  protection;  relays;  rotors;  vectors Résumé : Thermal models used in overload protection relays often fail to predict the rotor temperature for motors with impaired cooling conditions. In this case, the temperature estimated from the rotor resistance can be used as an indicator of the motor's cooling capability. However, this estimated rotor temperature is often corrupted by estimation error due to the asymmetry in the power supply. A detailed analysis of the trajectories of the complex current and voltage space vectors in a synchronous reference frame is presented in this paper, and the negative sequence fundamental frequency components are identified as the major cause of the estimation error. Based on this analysis, a fast and efficient algorithm is proposed to calculate the rotor temperature for line-connected induction machines. By applying the Goertzel algorithm to the complex current and voltage space vectors, constructed directly from the motor terminal measurements, the positive sequence fundamental frequency components are extracted, and the rotor temperature is then estimated with significantly reduced estimation error. Compared to the conventional scheme based on the fast Fourier transform, the proposed algorithm is faster and more efficient, and is therefore more suitable for implementation on a low-cost hardware platform. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675302&sortType%3Das [...]

Application of speed and load torque observers in high-speed train drive for diagnostic purposes / Guzinski, J. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 248 - 256 Titre : Application of speed and load torque observers in high-speed train drive for diagnostic purposes Type de document : texte imprimé Auteurs : Guzinski, J., Auteur ; Diguet, M., Auteur ; Krzeminski, Z., Auteur Année de publication : 2009 Article en page(s) : pp. 248 - 256 Note générale : electronics Langues : Anglais (eng) Mots-clés : electric  sensing  devices;  fault  diagnosis;  induction  motor  drives;  observers;  railways;  torque Résumé : In this paper, an application of speed and load torque observers is presented. The aim of the observer implementation is to be used in the diagnostic system for a motor speed sensor and a torque transmission system. The diagnostic system is dedicated to the high-speed train propelled by an induction motor. An analysis of the observed variables allows the identification of problems in the mechanical part of the main traction drive. For example, in the case of speed sensor faults, the motor control system could be switched into speed-sensorless control. The proposed observers were verified by simulation and on a test bench for 1.2-MW rail vehicle motor used in high-speed trains. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559375&sortType%3Das [...] [article] Application of speed and load torque observers in high-speed train drive for diagnostic purposes [texte imprimé] / Guzinski, J., Auteur ; Diguet, M., Auteur ; Krzeminski, Z., Auteur . - 2009 . - pp. 248 - 256. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 248 - 256 Mots-clés : electric  sensing  devices;  fault  diagnosis;  induction  motor  drives;  observers;  railways;  torque Résumé : In this paper, an application of speed and load torque observers is presented. The aim of the observer implementation is to be used in the diagnostic system for a motor speed sensor and a torque transmission system. The diagnostic system is dedicated to the high-speed train propelled by an induction motor. An analysis of the observed variables allows the identification of problems in the mechanical part of the main traction drive. For example, in the case of speed sensor faults, the motor control system could be switched into speed-sensorless control. The proposed observers were verified by simulation and on a test bench for 1.2-MW rail vehicle motor used in high-speed trains. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4559375&sortType%3Das [...]

Identification and time-domain simulation of the association inverter–cable–asynchronous machine using diffusive representation / Ben Smida, K. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 257 - 265 Titre : Identification and time-domain simulation of the association inverter–cable–asynchronous machine using diffusive representation Type de document : texte imprimé Auteurs : Ben Smida, K., Auteur ; Bidan, P., Auteur Année de publication : 2009 Article en page(s) : pp. 257 - 265 Note générale : electronics Langues : Anglais (eng) Mots-clés : finite  element  analysis;  induction  motors;  invertors;  overvoltage;  power  cables;  time-domain  analysis;  transmission  line  theory Résumé : Simulation models allowing the determination of the overvoltages at the motor's terminals are presented. Since these overvoltages are due to both the fronts and to the reflection phenomenon, the modeling of the machine and cable is achieved at an adequate time scale by using a lossy transmission line approach. The diffusive representation, a recently developed mathematical tool, is used for the simulation in the time domain of the inverter-cable-machine association. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675305&sortType%3Das [...] [article] Identification and time-domain simulation of the association inverter–cable–asynchronous machine using diffusive representation [texte imprimé] / Ben Smida, K., Auteur ; Bidan, P., Auteur . - 2009 . - pp. 257 - 265. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 257 - 265 Mots-clés : finite  element  analysis;  induction  motors;  invertors;  overvoltage;  power  cables;  time-domain  analysis;  transmission  line  theory Résumé : Simulation models allowing the determination of the overvoltages at the motor's terminals are presented. Since these overvoltages are due to both the fronts and to the reflection phenomenon, the modeling of the machine and cable is achieved at an adequate time scale by using a lossy transmission line approach. The diffusive representation, a recently developed mathematical tool, is used for the simulation in the time domain of the inverter-cable-machine association. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4675305&sortType%3Das [...]

Dynamic behavior modeling and verification of advanced electrical-generator set concept / Leuchter, J. in IEEE transactions on industrial electronics, Vol. 56 N°1 (Janvier 2009) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 266 - 279 Titre : Dynamic behavior modeling and verification of advanced electrical-generator set concept Type de document : texte imprimé Auteurs : Leuchter, J., Auteur ; Bauer, P., Auteur ; Rerucha, V., Auteur Année de publication : 2009 Article en page(s) : pp. 266 - 279 Note générale : electronics Langues : Anglais (eng) Mots-clés : diesel  engines;  electric  generators;  electric  potential;  set  theory Résumé : Current development trends regarding mobile electrical-generator sets (EGSs) indicate that enhancement of efficiency is to be sought in means to operate the driving engine (either diesel or gasoline) continuously at its optimum speed. The engine-generator dynamics at a sudden load change (from low load to high load) remains a challenge in this regard. The dynamic behavior analysis presented here proves that the introduction of an energy storage element into the EGS with variable-engine-speed concept eliminates this drawback. This paper addresses the identification of the dynamic behavior of such variable-speed EGS systems and the problems encountered during a sudden increase of load (power and voltage drops). En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682694&sortType%3Das [...] [article] Dynamic behavior modeling and verification of advanced electrical-generator set concept [texte imprimé] / Leuchter, J., Auteur ; Bauer, P., Auteur ; Rerucha, V., Auteur . - 2009 . - pp. 266 - 279. electronics Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 56 N°1 (Janvier 2009) . - pp. 266 - 279 Mots-clés : diesel  engines;  electric  generators;  electric  potential;  set  theory Résumé : Current development trends regarding mobile electrical-generator sets (EGSs) indicate that enhancement of efficiency is to be sought in means to operate the driving engine (either diesel or gasoline) continuously at its optimum speed. The engine-generator dynamics at a sudden load change (from low load to high load) remains a challenge in this regard. The dynamic behavior analysis presented here proves that the introduction of an energy storage element into the EGS with variable-engine-speed concept eliminates this drawback. This paper addresses the identification of the dynamic behavior of such variable-speed EGS systems and the problems encountered during a sudden increase of load (power and voltage drops). En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4682694&sortType%3Das [...]

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