“Active flux” DTFC-SVM sensorless control of IPMSM / Boldea, I. in IEEE transactions on energy conversion, Vol. 24 N° 2 (Juin 2009)  

Public ISBD [article]  inIEEE transactions on energy conversion > Vol. 24 N° 2 (Juin 2009) . - pp. 314 - 322 Titre : “Active flux” DTFC-SVM sensorless control of IPMSM Type de document : texte imprimé Auteurs : Boldea, I., Auteur ; Paicu, M. C., Auteur ; Andreescu, G., Auteur Année de publication : 2009 Article en page(s) : pp. 314 - 322 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : AC machines  machine control  permanent magnet motors  rotors  synchronous torque control Résumé : This paper proposes an implementation of a motion-sensorless control system in wide speed range based on "active flux" observer, and direct torque and flux control with space vector modulation (DTFC-SVM) for the interior permanent magnet synchronous motor (IPMSM), without signal injection. The concept of "active flux" (or "torque producing flux") turns all the rotor salient-pole ac machines into fully nonsalient-pole ones. A new function for Lq inductance depending on torque is introduced to model the magnetic saturation. Notable simplification in the rotor position and speed estimation is obtained, because the active flux position is identical with the rotor position. Extensive experimental results are presented to verify the principles and to demonstrate the effectiveness of the proposed sensorless control system. With the active flux observer, the IPMSM drive system operates from very low speed of 2 r/min at half full-load up to 1400 r/min. Higher speed is possible, in principle, with flux weakening. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4957565&sortType%3Das [...] [article] “Active flux” DTFC-SVM sensorless control of IPMSM [texte imprimé] / Boldea, I., Auteur ; Paicu, M. C., Auteur ; Andreescu, G., Auteur . - 2009 . - pp. 314 - 322. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N° 2 (Juin 2009) . - pp. 314 - 322 Mots-clés : AC machines  machine control  permanent magnet motors  rotors  synchronous torque control Résumé : This paper proposes an implementation of a motion-sensorless control system in wide speed range based on "active flux" observer, and direct torque and flux control with space vector modulation (DTFC-SVM) for the interior permanent magnet synchronous motor (IPMSM), without signal injection. The concept of "active flux" (or "torque producing flux") turns all the rotor salient-pole ac machines into fully nonsalient-pole ones. A new function for Lq inductance depending on torque is introduced to model the magnetic saturation. Notable simplification in the rotor position and speed estimation is obtained, because the active flux position is identical with the rotor position. Extensive experimental results are presented to verify the principles and to demonstrate the effectiveness of the proposed sensorless control system. With the active flux observer, the IPMSM drive system operates from very low speed of 2 r/min at half full-load up to 1400 r/min. Higher speed is possible, in principle, with flux weakening. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4957565&sortType%3Das [...]

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Combined flux observer with signal injection enhancement for wide speed range sensorless direct torque control of IPMSM drives / Andreescu, G. in IEEE transactions on energy conversion, Vol. 23 n°2 (Juin 2008)  

Public ISBD [article]  inIEEE transactions on energy conversion > Vol. 23 n°2 (Juin 2008) . - pp. 393 - 402 Titre : Combined flux observer with signal injection enhancement for wide speed range sensorless direct torque control of IPMSM drives Type de document : texte imprimé Auteurs : Andreescu, G., Auteur ; Pitic, C.I., Auteur ; Blaabjerg, F., Auteur Année de publication : 2008 Article en page(s) : pp. 393 - 402 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Permanent magnet motors  rotors  synchronous motor drives  torque control Résumé : This paper proposes a motion-sensorless control system using direct torque control with space vector modulation for interior permanent magnet synchronous motor (IPMSM) drives, for wide speed range operation, including standstill. A novel stator flux observer with variable structure uses a combined voltage-current model with PI compensator for low-speed operations. As speed increases, the observer switches gradually to a PI compensated closed-loop voltage model, which is solely used at high speeds. High-frequency rotating-voltage injection with a single D-module bandpass vector filter and a phase-locked loop state observer with a new synchronization procedure are used to estimate the rotor position, which is needed only by the current model in stator flux observer at low speeds. A new rotor speed estimator for the whole speed-loop range, based on the stator flux speed estimation with a new dynamic correction depending on estimated torque, is proposed and tested. Extensive simulation results and significant experimental results provided good performance for the proposed IPMSM sensorless system in more than 1:1000 speed range, under full-load operation, from very low speeds (1 r/min experimental) up to rated speed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4456515&sortType%3Das [...] [article] Combined flux observer with signal injection enhancement for wide speed range sensorless direct torque control of IPMSM drives [texte imprimé] / Andreescu, G., Auteur ; Pitic, C.I., Auteur ; Blaabjerg, F., Auteur . - 2008 . - pp. 393 - 402. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 n°2 (Juin 2008) . - pp. 393 - 402 Mots-clés : Permanent magnet motors  rotors  synchronous motor drives  torque control Résumé : This paper proposes a motion-sensorless control system using direct torque control with space vector modulation for interior permanent magnet synchronous motor (IPMSM) drives, for wide speed range operation, including standstill. A novel stator flux observer with variable structure uses a combined voltage-current model with PI compensator for low-speed operations. As speed increases, the observer switches gradually to a PI compensated closed-loop voltage model, which is solely used at high speeds. High-frequency rotating-voltage injection with a single D-module bandpass vector filter and a phase-locked loop state observer with a new synchronization procedure are used to estimate the rotor position, which is needed only by the current model in stator flux observer at low speeds. A new rotor speed estimator for the whole speed-loop range, based on the stator flux speed estimation with a new dynamic correction depending on estimated torque, is proposed and tested. Extensive simulation results and significant experimental results provided good performance for the proposed IPMSM sensorless system in more than 1:1000 speed range, under full-load operation, from very low speeds (1 r/min experimental) up to rated speed. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4456515&sortType%3Das [...]

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