Documents disponibles écrits par cet auteur

Rotor position and speed estimation of a variable structure direct-torque-controlled IPM synchronous motor drive at very low speeds including standstill / Sayeef, Saad in IEEE transactions on industrial electronics, Vol. 57 N° 11 (Novembre 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 11 (Novembre 2010) . - pp. 3715 - 3723 Titre : Rotor position and speed estimation of a variable structure direct-torque-controlled IPM synchronous motor drive at very low speeds including standstill Type de document : texte imprimé Auteurs : Sayeef, Saad, Auteur ; Foo, Gilbert, Auteur ; Muhammed Fazlur Rahman, Auteur Année de publication : 2011 Article en page(s) : pp. 3715 - 3723 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : Direct  torque  control  (DTC)  Sensorless  Signal  injection  Variable  structure Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The performance of a speed sensorless variable structure direct-torque-controlled interior permanent magnet synchronous motor drive at very low speeds including standstill is investigated in this paper. The rotor position and speed are estimated using a high-frequency (HF) signal injection algorithm at low speeds and a sliding observer at medium to high speeds. The changeover between these two algorithms is performed using a weighting function which smoothly hands over the estimated rotor position information for stator flux and torque estimation purposes. Experiments were performed to test the effectiveness of the proposed HF signal injection algorithm, and results show that the sensorless drive is capable of accurately estimating the position and speed at very low speeds including standstill. The implementation of the changeover algorithm to switch between the two observers at low and high speeds has enabled sensorless operation of the drive from zero to base speed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409588 [article] Rotor position and speed estimation of a variable structure direct-torque-controlled IPM synchronous motor drive at very low speeds including standstill [texte imprimé] / Sayeef, Saad, Auteur ; Foo, Gilbert, Auteur ; Muhammed Fazlur Rahman, Auteur . - 2011 . - pp. 3715 - 3723. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 11 (Novembre 2010) . - pp. 3715 - 3723 Mots-clés : Direct  torque  control  (DTC)  Sensorless  Signal  injection  Variable  structure Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : The performance of a speed sensorless variable structure direct-torque-controlled interior permanent magnet synchronous motor drive at very low speeds including standstill is investigated in this paper. The rotor position and speed are estimated using a high-frequency (HF) signal injection algorithm at low speeds and a sliding observer at medium to high speeds. The changeover between these two algorithms is performed using a weighting function which smoothly hands over the estimated rotor position information for stator flux and torque estimation purposes. Experiments were performed to test the effectiveness of the proposed HF signal injection algorithm, and results show that the sensorless drive is capable of accurately estimating the position and speed at very low speeds including standstill. The implementation of the changeover algorithm to switch between the two observers at low and high speeds has enabled sensorless operation of the drive from zero to base speed. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5409588

Sensorless direct torque and flux-controlled IPM synchronous motor drive at very low speed without signal injection / Foo, Gilbert in IEEE transactions on industrial electronics, Vol. 57 N° 1 (Janvier 2010) 

Public ISBD [article]  in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 395 - 403 Titre : Sensorless direct torque and flux-controlled IPM synchronous motor drive at very low speed without signal injection Type de document : texte imprimé Auteurs : Foo, Gilbert, Auteur ; Muhammed Fazlur Rahman, Auteur Article en page(s) : pp. 395 - 403 Note générale : Génie électrique Langues : Anglais (eng) Mots-clés : AC  motor  drives  Direct  torque  and  flux  control  (DTFC)  Extended  rotor  flux  Interior  permanent-magnet  (IPM)  synchronous  motor  (IPMSM)  Lyapunov  methods  Sensorless  control  Stator  flux  observer  Stator  resistance  estimation  Variable-speed  drives  Zero  speed Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a novel speed-sensorless direct torque and flux control scheme for an interior permanent-magnet synchronous motor drive. The drive uses a new stator flux observer based on the extended rotor flux concept. Due to the simultaneous implementation of stationary and rotating reference frames, the proposed observer does not require any speed adaptation and is inherently sensorless. Unlike speed adaptive observers, the proposed observer is immune to speed estimation errors; thus, its performance at very low speed is improved significantly. A novel stator resistance estimator is incorporated into the sensorless drive to compensate the effects of stator resistance variation. The global asymptotic stabilities of both the flux observer and stator resistance estimator are guaranteed by the Lyapunov stability analysis. Simulation and experimental results at very low speeds, including 0 and 5 r/min, confirm the effectiveness of the proposed method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226582 [article] Sensorless direct torque and flux-controlled IPM synchronous motor drive at very low speed without signal injection [texte imprimé] / Foo, Gilbert, Auteur ; Muhammed Fazlur Rahman, Auteur . - pp. 395 - 403. Génie électrique Langues : Anglais (eng) in IEEE transactions on industrial electronics > Vol. 57 N° 1 (Janvier 2010) . - pp. 395 - 403 Mots-clés : AC  motor  drives  Direct  torque  and  flux  control  (DTFC)  Extended  rotor  flux  Interior  permanent-magnet  (IPM)  synchronous  motor  (IPMSM)  Lyapunov  methods  Sensorless  control  Stator  flux  observer  Stator  resistance  estimation  Variable-speed  drives  Zero  speed Index. décimale : 621.38 Dispositifs électroniques. Tubes à électrons. Photocellules. Accélérateurs de particules. Tubes à rayons X Résumé : This paper proposes a novel speed-sensorless direct torque and flux control scheme for an interior permanent-magnet synchronous motor drive. The drive uses a new stator flux observer based on the extended rotor flux concept. Due to the simultaneous implementation of stationary and rotating reference frames, the proposed observer does not require any speed adaptation and is inherently sensorless. Unlike speed adaptive observers, the proposed observer is immune to speed estimation errors; thus, its performance at very low speed is improved significantly. A novel stator resistance estimator is incorporated into the sensorless drive to compensate the effects of stator resistance variation. The global asymptotic stabilities of both the flux observer and stator resistance estimator are guaranteed by the Lyapunov stability analysis. Simulation and experimental results at very low speeds, including 0 and 5 r/min, confirm the effectiveness of the proposed method. DEWEY : 621.38 ISSN : 0278-0046 En ligne : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5226582