Title :
Sensorless control strategy for salient-pole PMSM based on extended EMF in rotating reference frame
Author :
Morimoto, Shigeo ; Kawamoto, Keisuke ; Sanada, Masayuki ; Takeda, Yoji
Author_Institution :
Osaka Prefecture Univ., Japan
Abstract :
This paper presents a novel sensorless control strategy for a salient-pole permanent magnet synchronous motor. A new model of salient-pole PMSM using an extended electromotive force (EMF) in the rotating reference frame is utilized to estimate both position and speed. The extended EMF is estimated by a least-order observer, and the estimation position error are obtained from the extended EMF. Both estimated position and speed are corrected so that the position error becomes zero. The proposed system is very simple and the design procedure is easy and clear. Several experimental drive tests are demonstrated and the experimental results show the effectiveness of the proposed sensorless control system.
Keywords :
control system synthesis; machine testing; machine theory; machine vector control; observers; parameter estimation; permanent magnet motors; position control; synchronous motors; velocity control; control design; control performance; extended EMF; extended electromotive force; least-order observer; position error; position estimation; rotating reference frame; salient-pole permanent magnet synchronous motor; sensorless control strategy; speed estimation; Error correction; Estimation error; Optical sensors; Permanent magnet motors; Sensorless control; Shafts; Stators; Testing; Torque control; Voltage;
Conference_Titel :
Industry Applications Conference, 2001. Thirty-Sixth IAS Annual Meeting. Conference Record of the 2001 IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-7114-3
DOI :
10.1109/IAS.2001.955991
