Title :
Position-sensorless control method at low speed for permanent magnet synchronous motors using induced voltage caused by magnetic saturation
Author :
Iwaji, Yoshitaka ; Kokami, Yasuhiko ; Kurosawa, Minoru
Author_Institution :
Hitachi, Ltd., Hitachi, Japan
Abstract :
A new position-sensorless method has been developed for a permanent magnet synchronous motor (PMSM) drive at low speed. This method utilizes the induced voltage caused by magnetic saturation of PMSM. The rotor position can be detected by using the open phase voltage of a conventional 120-degree commutation. No harmonic injection is needed. This paper discusses the principle of the proposed method and the experimental results.
Keywords :
permanent magnet motors; position control; sensorless machine control; synchronous motor drives; PMSM drive; induced voltage; magnetic saturation; open phase voltage; permanent magnet synchronous motors; position-sensorless control method; rotor position; Commutation; Hysteresis motors; Magnetic flux; Permanent magnet motors; Phase detection; Power electronics; Rotors; Saturation magnetization; Synchronous motors; Voltage control; 120 degree commutation; PMSM; motor drive; sensorless control;
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
DOI :
10.1109/IPEC.2010.5542008
