Title :
An inductance profile demodulator based observer for sensorless control of switched reluctance motors
Author :
Zhang, Jinhui ; Radun, Arthur V. ; Ferreira, Caio A.
Author_Institution :
Ansoft Corp., Pittsburgh, PA, USA
Abstract :
An alternative strategy to control the SRM without a position sensor is proposed. Sensing currents are injected into idle SRM phases. The sensing currents are then demodulated to generate an error function that is input to a state observer. This inductance profile demodulator based observer estimates rotor position and speed continuously and is capable of operation down to zero speed. The demodulator based observer´s performance is analyzed and verified using simulation and experiments.
Keywords :
demodulators; inductance; machine control; reluctance motors; inductance profile demodulator; rotor position; sensing currents; sensorless control; switched reluctance motors; Demodulation; Inductance; Observers; Reluctance machines; Reluctance motors; Rotors; Sensorless control; Shafts; Stator windings; Torque;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620554
