Research on Improving Direct Torque Control of Permanent Magnet Synchronous Motor by Sliding Mode Variable Structure Control

Shuai Li ； Fujun Deng

《International Core Journal of Engineering》 7卷11期 (2021/11) Pp. 307-311

https://doi.org/10.6919/ICJE.202111_7(11).0047

摘要

This paper starts with the problem of torque shake of direct torque control of permanent magnetic synchronous motor, and changes the Bang-Bang controller of traditional direct torque control into a sliding mode controller by introducing the control of the sliding mode structure, and improves the inverter by changing the structure control strategy to realize the stability of the torque output characteristics of the control system. The transfer function of slip-mode structure control is improved by induction method, which makes the gain of the controller change the feedback variable actively with the system conditions, so as to achieve the purpose of adaptive. Finally, the simulation experimental data of MATLAB/Simulink as the platform show that the improved system can reduce the speed jitter and torque fluctuation, and compare the output performance with the traditional direct torque control, and give the control advantages embodied in the control mode in this paper.

關鍵字

Permanent magnet synchronous motor ； Sliding mode control ； Direct torque control ； Robustness

參考文獻

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