Full-Speed Range Encoderless Control for Salient-Pole PMSM with a Novel Full-Order SMO

Yuanlin Wang, Xiaocan Wang, Wei Xie and Manfeng Dou
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Yuanlin Wang: The School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Xiaocan Wang: The School of Automation, Northwestern Polytechnical University, Xi’an 710072, China
Wei Xie: Quanzhou Institute of Equipment Manufacturing, Haixi Institutes, Chinese Academy of Sciences, Jinjiang 362200, China
Manfeng Dou: The School of Automation, Northwestern Polytechnical University, Xi’an 710072, China

Energies, 2018, vol. 11, issue 9, 1-14

Abstract: For salient-pole permanent magnet synchronous motor (PMSM), the amplitude of extended back electromotive force (EEMF) is determined by rotor speed, stator current and its derivative value. Theoretically, even at extremely low speed, the back EEMF can be detected if the current in q -axis is changing. However, it is difficult to detect the EEMF precisely due to the current at low speed. In this paper, novel full-order multi-input and multi-output discrete-time sliding mode observer (SMO) is built to detect the rotor position. With the proposed rotor position estimation technique, the motor can start up from standstill and reverse between positive and negative directions without a position sensor. The proposed method was evaluated by experiment.

Keywords: sliding mode observer (SMO); permanent magnet synchronous motor (PMSM); extended back electromotive force (EEMF); position sensorless (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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