Title :
Sensorless control of salient pole PMSM using a low-frequency signal injection
Author :
Eskola, Matti ; Tuusa, Heikki
Author_Institution :
Tampere Univ. of Technol.
Abstract :
This paper deals with sensorless control of permanent magnet synchronous motor. The low-frequency signal injection estimator is studied in the case of salient PMSM. If there is an error in the estimated position, the injected signal creates a torque oscillation and affects the back-emf. The oscillating back-emf can be used to track the position and speed. The saliency of the PMSM is a disturbance for the low frequency estimator. In this paper the effect of saliency is analysed in steady state and a simple method to compensate the saliency effect is proposed. The performance of the method is verified by measurements
Keywords :
machine control; permanent magnet motors; synchronous motors; torque; low-frequency signal injection estimator; permanent magnet synchronous motor; position tracking; saliency effect; salient pole PMSM; sensorless control; torque oscillation; Equations; Frequency estimation; Magnetic flux; Permanent magnet motors; Saturation magnetization; Sensorless control; Steady-state; Synchronous motors; Torque; Voltage; Permanent magnet motor; sensorless control;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219749
