Study on constant voltage discharge of flywheel energy storage motor based on double closed loop sliding mode

QIU Mengmeng, ZHANG Li, ZHU Wenwu, SHENG Yan

Journal of Qilu University of Technology ›› 2025, Vol. 39 ›› Issue (1) : 18-24.

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Journal of Qilu University of Technology ›› 2025, Vol. 39 ›› Issue (1) : 18-24. DOI: 10.16442/j.cnki.qlgydxxb.2025.01.003
Mechatronics engineering and information engineering

Study on constant voltage discharge of flywheel energy storage motor based on double closed loop sliding mode

  • QIU Mengmeng1,ZHANG Li1,ZHU Wenwu1,SHENG Yan2
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Abstract

The requirement of the flywheel energy storage device is to ensure a constant voltage of the bus capacitor during the charging and discharging processes.Aiming at the problems of non-linearity and poor robustness under traditional voltage outer loop PI control,an improved sliding mode voltage square control is proposed.The system achieves global linearization control,and improves the robustness of the system in a wide range of speed regulation.In addition,the sign function of the current sliding mode inner loop is changed to a relatively saturated function.On the basis of retaining excellent robustness,the system chattering and harmonic effects are reduced.The results show that the proposed control strategy has a faster response speed and better anti-interference ability than traditional voltage control.

Key words

flywheel energy storage / permanent magnet synchronous motor / discharge control / double closed loop sliding mode controller / linear treatment

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QIU Mengmeng, ZHANG Li, ZHU Wenwu, SHENG Yan. Study on constant voltage discharge of flywheel energy storage motor based on double closed loop sliding mode[J]. Journal of Qilu University of Technology, 2025, 39(1): 18-24 https://doi.org/10.16442/j.cnki.qlgydxxb.2025.01.003

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