Field Weakening Operation Control Strategies of PMSM Based on Feedback Linearization

Kai Zhou, Min Ai, Dongyang Sun, Ningzhi Jin and Xiaogang Wu
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Kai Zhou: Engineering Research Center of Automotive Electronics Drive Control and System Integration, Ministry of Education. Harbin University of Science and Technology, Harbin 150080, China
Min Ai: Engineering Research Center of Automotive Electronics Drive Control and System Integration, Ministry of Education. Harbin University of Science and Technology, Harbin 150080, China
Dongyang Sun: Engineering Research Center of Automotive Electronics Drive Control and System Integration, Ministry of Education. Harbin University of Science and Technology, Harbin 150080, China
Ningzhi Jin: Engineering Research Center of Automotive Electronics Drive Control and System Integration, Ministry of Education. Harbin University of Science and Technology, Harbin 150080, China
Xiaogang Wu: Engineering Research Center of Automotive Electronics Drive Control and System Integration, Ministry of Education. Harbin University of Science and Technology, Harbin 150080, China

Energies, 2019, vol. 12, issue 23, 1-18

Abstract: Based on current research into the mathematical model of the permanent magnet synchronous motor (PMSM) and the feedback linearization theory, a control strategy established upon feedback linearization is proposed. The Lie differential operation is performed on the output variable to obtain the state feedback of the nonlinear system, and the dynamic characteristics of the original system are transformed into linear dynamic characteristics. A current controller based on the input–output feedback linearization algorithm is designed to realize the input–output linearization control of the PMSM. The current controller decouples the d–q axis current from the flux linkage information of the motor and outputs a control voltage. When the motor speed reaches above the base speed, the field-forward and straight-axis current components are newly distributed to achieve field weakening control, which can realize the smooth transition between the constant torque region and weak magnetic region. Simulation and experimental results show the feasibility and viability of the strategy.

Keywords: permanent magnet synchronous motor; field weakening control; feedback linearization; current lead angle (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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