An Improved Sliding Mode Control Method to Increase the Speed Stability of Permanent Magnet Synchronous Motors

Yuhao Wei, Li Sun and Zhongxian Chen ()
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Yuhao Wei: School of Computer & Computing Science, Zhejiang University City College, Hangzhou 310015, China
Li Sun: School of Intelligence Manufacturing, Huanghuai University, Zhumadian 463000, China
Zhongxian Chen: School of Intelligence Manufacturing, Huanghuai University, Zhumadian 463000, China

Energies, 2022, vol. 15, issue 17, 1-12

Abstract: A permanent magnet synchronous motor (PMSM) plays an important role in the operation performance of an electric vehicle. In order to increase the speed stability of PMSMs, an improved sliding mode control (SMC) method is proposed in this paper. Firstly, the control process of a PMSM is divided into parts, which are the torque closed-loop control and speed closed-loop control. Secondly, an integrated control method with proportional integral (PI) and inverter switching frequency is adopted in order to increase the torque performance of the PMSM. Lastly, compared with the traditional SMC method, an improved SMC method with saturation function is proposed in order to decrease the speed fluctuation of the PMSM from 7.7% to 5.9%, thereby increasing the speed stability of the PMSM. The results of the experimental test indicate that both the speed stability and starting performance of the PMSM are increased by the improved SMC method.

Keywords: permanent magnet synchronous motor; speed control; torque control; saturation function; SMC (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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