Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title Performance Improvement of Sensorless Drives for Surface Mounted Permanent Magnet Synchronous Motor using a Dual PLL Structure
Authors Kwang-Woon Lee
Page pp.543-546
ISSN 1229-2214
Keywords Surface mounted permanent magnet synchronous motor ; Sensorless control ; PLL(Phase Locked Loop)
Abstract This paper presents a simple approach for improving the performance of back-electromotive force (back-EMF)-estimation-based sensorless drives for surface-mounted permanent magnet synchronous motors (SPMSM). Similar to conventional approaches, a hypothetical d-q synchronous reference frame model of SPMSM is employed in the proposed approach to estimate the back-EMFs. This approach also employs a dual phase locked loop structure to compensate for the effect of the dead time and parameter uncertainty of the inverter on the estimated back-EMFs. The proposed algorithm is validated by conducting experiments.