A sliding mode speed and position observer for a surface-mounted PMSM

Yong Chen; Meng Li; Yu-Wen Gao; Zhang-Yong Chen

doi:10.1016/j.isatra.2018.11.011

A sliding mode speed and position observer for a surface-mounted PMSM

ISA Trans. 2019 Apr:87:17-27. doi: 10.1016/j.isatra.2018.11.011. Epub 2018 Nov 19.

Authors

Yong Chen¹, Meng Li², Yu-Wen Gao², Zhang-Yong Chen²

Affiliations

¹ School of Automation and Engineering and, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China; Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China. Electronic address: ychencd@uestc.edu.cn.
² School of Automation and Engineering and, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China; Institute of Electric Vehicle Driving System and Safety Technology, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China.

PMID: 30528125
DOI: 10.1016/j.isatra.2018.11.011

Abstract

To improve the speed and position observation performance of a Surface-Mounted Permanent Magnet Synchronous Motor (SM-PMSM), an improved sliding mode observer (SMO) based on the adaptive synchronization filter (ASF) and quadrature phase-lock loop (QPLL) is proposed. An adaptive synchronous filter based on feedback rotor position estimation from a QPLL is proposed to extract the fundamental signal of the back electromotive force (back-EMF). Then, a QPLL is linked to calculate the rotor position and speed according to the fundamental signal of the back-EMF, in order to effectively suppress the estimated harmonics and chattering and improve the observation accuracy of speed and position. Finally, the effectiveness and feasibility of the proposed observer approach are verified by simulation and dSPACE.

Keywords: Adaptive synchronization filter; Quadrature phase-lock loop; Sliding mode observer; Surface-mounted PMSM.