Documents disponibles écrits par cet auteur

Control of DFIG-based wind generation to improve interarea oscillation damping / Zhixin, Miao in IEEE transactions on energy conversion, Vol. 24 N° 2 (Juin 2009) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 24 N° 2 (Juin 2009) . - pp. 415 - 422 Titre : Control of DFIG-based wind generation to improve interarea oscillation damping Type de document : texte imprimé Auteurs : Zhixin, Miao, Auteur ; Lingling Fan, Auteur ; Osborn, Dale, Auteur Année de publication : 2009 Article en page(s) : pp. 415 - 422 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : Asynchronous  generators;  control  system  synthesis;  damping;  electric  current  control;  feedback;  machine  vector  control;  oscillations;  power  convertors;  power  generation  control;  reactive  power  control;  time-domain  analysis;  wind  power  plants Résumé : Power systems with high penetration of wind power usually require long-distance transmission to export wind power to the market. Interarea oscillation is an issue faced in long-distance transmission. Can wind generation based on doubly fed induction generator (DFIG) help to damp oscillations and how? In this paper, a control scheme is developed for the DFIG with rotor-side converter to damp interarea oscillations. The DFIG is modeled in MATLABreg/Simulink utilizing its vector control scheme feature, and inner current control and outer active/reactive power control loops are modeled and designed. A two-area system that suffers from poor interarea oscillation damping along with a wind farm in the area that exports power is investigated. A damping controller is designed and time-domain simulations are used to demonstrate the effectiveness of the controller. The major contributions of the paper are as follows: 1) built a wind farm interarea oscillation study system based on the classical two-area four-machine system, 2) established that in vector control scheme, active power modulation can best help to damp oscillations, 3) successfully designed a feedback controller using remote signals with good interarea oscillation observability. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4957574&sortType%3Das [...] [article] Control of DFIG-based wind generation to improve interarea oscillation damping [texte imprimé] / Zhixin, Miao, Auteur ; Lingling Fan, Auteur ; Osborn, Dale, Auteur . - 2009 . - pp. 415 - 422. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N° 2 (Juin 2009) . - pp. 415 - 422 Mots-clés : Asynchronous  generators;  control  system  synthesis;  damping;  electric  current  control;  feedback;  machine  vector  control;  oscillations;  power  convertors;  power  generation  control;  reactive  power  control;  time-domain  analysis;  wind  power  plants Résumé : Power systems with high penetration of wind power usually require long-distance transmission to export wind power to the market. Interarea oscillation is an issue faced in long-distance transmission. Can wind generation based on doubly fed induction generator (DFIG) help to damp oscillations and how? In this paper, a control scheme is developed for the DFIG with rotor-side converter to damp interarea oscillations. The DFIG is modeled in MATLABreg/Simulink utilizing its vector control scheme feature, and inner current control and outer active/reactive power control loops are modeled and designed. A two-area system that suffers from poor interarea oscillation damping along with a wind farm in the area that exports power is investigated. A damping controller is designed and time-domain simulations are used to demonstrate the effectiveness of the controller. The major contributions of the paper are as follows: 1) built a wind farm interarea oscillation study system based on the classical two-area four-machine system, 2) established that in vector control scheme, active power modulation can best help to damp oscillations, 3) successfully designed a feedback controller using remote signals with good interarea oscillation observability. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4957574&sortType%3Das [...]

Harmonic analysis of a DFIG for a wind energy conversion system / Lingling Fan in IEEE transactions on energy conversion, Vol. 25 N° 1 (Mars 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 181 - 190 Titre : Harmonic analysis of a DFIG for a wind energy conversion system Type de document : texte imprimé Auteurs : Lingling Fan, Auteur ; Yuvarajan, S., Auteur ; Kavasseri, R., Auteur Année de publication : 2010 Article en page(s) : pp. 181 - 190 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : asynchronous  generators;  direct  energy  conversion;  equivalent  circuits;  harmonic  analysis;  machine  theory;  wind  power  plants Résumé : This paper develops a framework for analysis of harmonics in a doubly fed induction generator (DFIG) caused by nonsinusoidal conditions in rotor and unbalance in stator. Nonsinusoidal rotor voltages are decomposed into harmonic components and their corresponding sequences are identified. Induced harmonics in stator are analyzed and computed, from which the torques produced by these interactions between stator and rotor harmonic components can be found. During unbalanced stator conditions, symmetric component theory is applied to the stator voltage to get positive-, negative-, and zero-sequence components of stator and rotor currents. The steady-state negative-sequence equivalent circuit for a DFIG is derived based on the reference frame theory. Harmonic currents in the rotor are computed based on the sequence circuits. In both scenarios, the harmonic components of the electromagnetic torque are calculated from the interactions of the harmonic components of the stator and rotor currents. Three case studies are considered, namely: 1) nonsinusoidal rotor injection; 2) an isolated unbalanced stator load scenario; and 3) unbalanced grid-connected operation. The analysis is verified with results from numerical simulations in Matlab/Simulink. For illustration, the second case is verified using experiments. The simulation results and experimental results agree well with the results from analysis. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5340615&sortType%3Das [...] [article] Harmonic analysis of a DFIG for a wind energy conversion system [texte imprimé] / Lingling Fan, Auteur ; Yuvarajan, S., Auteur ; Kavasseri, R., Auteur . - 2010 . - pp. 181 - 190. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25 N° 1 (Mars 2010) . - pp. 181 - 190 Mots-clés : asynchronous  generators;  direct  energy  conversion;  equivalent  circuits;  harmonic  analysis;  machine  theory;  wind  power  plants Résumé : This paper develops a framework for analysis of harmonics in a doubly fed induction generator (DFIG) caused by nonsinusoidal conditions in rotor and unbalance in stator. Nonsinusoidal rotor voltages are decomposed into harmonic components and their corresponding sequences are identified. Induced harmonics in stator are analyzed and computed, from which the torques produced by these interactions between stator and rotor harmonic components can be found. During unbalanced stator conditions, symmetric component theory is applied to the stator voltage to get positive-, negative-, and zero-sequence components of stator and rotor currents. The steady-state negative-sequence equivalent circuit for a DFIG is derived based on the reference frame theory. Harmonic currents in the rotor are computed based on the sequence circuits. In both scenarios, the harmonic components of the electromagnetic torque are calculated from the interactions of the harmonic components of the stator and rotor currents. Three case studies are considered, namely: 1) nonsinusoidal rotor injection; 2) an isolated unbalanced stator load scenario; and 3) unbalanced grid-connected operation. The analysis is verified with results from numerical simulations in Matlab/Simulink. For illustration, the second case is verified using experiments. The simulation results and experimental results agree well with the results from analysis. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5340615&sortType%3Das [...]

Wind farms with HVdc delivery in inertial response and primary frequency control / Zhixin, Miao in IEEE transactions on energy conversion, Vol. 25, N° 4 (Décembre 2010) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 25, N° 4 (Décembre 2010) . - pp. 1171 - 1178 Titre : Wind farms with HVdc delivery in inertial response and primary frequency control Type de document : texte imprimé Auteurs : Zhixin, Miao, Auteur ; Lingling Fan, Auteur ; Osborn, D., Auteur Année de publication : 2011 Article en page(s) : pp. 1171 - 1178 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : HVDC  power  convertors;  frequency  control;  wind  power  plants Résumé : This paper develops a coordination control strategy for wind farms with line commutated converter-based HVdc delivery for participating in inertial response and primary frequency control. The coordination philosophy is to feedback the grid frequency and its derivative and adjust the delivery power of the HVdc link according to the feedback signals. The feedback loop employing the derivative of the grid frequency aims to improve the inertial response while the feedback loop employing the grid frequency deviation introduces a droop at the rectifier control loop. When the grid frequency is too high or too low, active power flow through the HVdc link will be ramped down or up. In turn, the wind generation will increase or decrease the blade angles to reduce or increase the captured wind power through pitch control. A case study demonstrates the effectiveness of the inertial enhancement and frequency droop in HVdc control. Simulation results in transient security assessment tool are given. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5545384&sortType%3Das [...] [article] Wind farms with HVdc delivery in inertial response and primary frequency control [texte imprimé] / Zhixin, Miao, Auteur ; Lingling Fan, Auteur ; Osborn, D., Auteur . - 2011 . - pp. 1171 - 1178. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 25, N° 4 (Décembre 2010) . - pp. 1171 - 1178 Mots-clés : HVDC  power  convertors;  frequency  control;  wind  power  plants Résumé : This paper develops a coordination control strategy for wind farms with line commutated converter-based HVdc delivery for participating in inertial response and primary frequency control. The coordination philosophy is to feedback the grid frequency and its derivative and adjust the delivery power of the HVdc link according to the feedback signals. The feedback loop employing the derivative of the grid frequency aims to improve the inertial response while the feedback loop employing the grid frequency deviation introduces a droop at the rectifier control loop. When the grid frequency is too high or too low, active power flow through the HVdc link will be ramped down or up. In turn, the wind generation will increase or decrease the blade angles to reduce or increase the captured wind power through pitch control. A case study demonstrates the effectiveness of the inertial enhancement and frequency droop in HVdc control. Simulation results in transient security assessment tool are given. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5545384&sortType%3Das [...]