Electronic Science and Technology ›› 2019, Vol. 32 ›› Issue (7): 1-5.doi: 10.16180/j.cnki.issn1007-7820.2019.07.001

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Research on Direct Torque Control of Permanent Magnet Synchronous Motor Based on Sliding Mode Control

JI Shengyang,WANG Xudong,XU Xiaozhuo,SUN Weixiang,SHI Kaining   

  1. School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China
  • Received:2018-07-08 Online:2019-07-15 Published:2019-08-14
  • Supported by:
    National Natural Science Foundation of China(U1504506);National Natural Science Foundation of China(51777060);Henan Province Science and Technology Research Project(162102210222);Henan Province Higher School Youth Key Teacher Training Program(2017GGJS051);HPU Youth Key Teacher Funding Program(GGJS2016-183);Henan Polytechnic University Doctoral Fund(B2018-30)


For the direct torque control (DTC) of permanent magnet synchronous motor, there are large problems such as electromagnetic torque ripple, flux pulsation and low speed performance. To solve these problems, the sliding mode control strategy was introduced to control the permanent magnet synchronous motor. By establishing the vector mathematical model of PMSM, a direct torque controller based on sliding mode control was designed, and modeling and simulation analysis was carried out by using MATLAB/Simulink. The results showed that compared with the traditional DTC, the direct torque control system of the permanent magnet synchronous motor based on the sliding mode control strategy had lower amplitude of electromagnetic torque fluctuation, better dynamic performance and anti-disturbance capability, which could improve system characteristics more effectively to meet the needs of actual motor control.

Key words: permanent magnet synchronous motor, direct torque control, sliding mode control, vector mathematical mode, electromagnetic torque ripple, MATLAB/Simulink simulation

CLC Number: 

  • TN787