Title: A novel flux-weakening control strategy for permanent magnet synchronous motor

Authors: Taiyuan Hu; Fei Lin; Zhongping Yang; Hu Sun

Addresses: School of Electrical Engineering, Beijing Jiaotong University, Beijing, 100044, China ' School of Electrical Engineering, Beijing Jiaotong University, Beijing, 100044, China ' School of Electrical Engineering, Beijing Jiaotong University, Beijing, 100044, China ' School of Electrical Engineering, Beijing Jiaotong University, Beijing, 100044, China

Abstract: Flux-weakening control of permanent magnet synchronous motor (PMSM) based on single current regulator has high dynamic performance. But the fixed given q-axis voltage decreases the motor's efficiency and load capability. This paper presents a new control strategy with variable q-axis voltage, which can adjust q-axis voltage fully using the motor DC voltage to make motor working at the optimal operating points. It makes the motor efficiency and improves load capability. This method is easy to achieve and does not depend on motor parameters. The results of simulation verify the method in this paper.

Keywords: permanent magnet synchronous motors; PMSM; flux weakening control; single current regulator; SCR; variable q-axis voltage; motor efficiency; load capability; control strategy; simulation.

DOI: 10.1504/IJMPT.2012.051356

International Journal of Materials and Product Technology, 2012 Vol.45 No.1/2/3/4, pp.239 - 248

Published online: 18 Sep 2014 *

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