Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Effects of Parameter Errors on Sensorless Operation of PMSM
Authors Yong-Soon Park ; Seung-Ki Sul ; Jun-Keun Ji ; Young-Jae Park ; 李Dong-Hwan Lee
DOI 10.6113/TKPE/2011.16.1.71
Page pp.71-78
ISSN 1229-2214
Keywords Parameter errors; Sensorless control; Permanent magnet synchronous motor
Abstract In this paper, the effect of parameter errors to the estimation of the rotor angle in sensorless operation of a permanent magnet synchronous motor is analyzed. The angle error information which is utilized to estimate the rotor position can be classified into two factors, namely, the sign factor and the gain factor. This paper particularly focuses on parameter errors reflected in the sign factor of the angle error information which causes a deviation in the angle estimation. In this paper, mathematical expressions describing the deviation of the angle estimation due to the inductance error and the resistance error in the sensorless control are derived. The validity of the expression is verified by the computer simulations and the experimental results.