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A Novel flux-weakening control Method with Quadrature Voltage Constrain for Electrolytic Capacitorless PMSM Drives

CES Transactions on Electrical Machines and Systems 2022年第3期6卷 279-287页

作者： Junya Huo Dawei Ding Zekun Ren Gaolin Wang Nannan Zhao Lianghong Zhu Dianguo Xu the School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin 150001China the Guangdong Midea Air-Conditioning Equipment Co. Ltd.Foshan 528311China IEEE

In electrolytic capacitorless permanent magnet synchronous motor(PMSM) drives, the DC-link voltage will fluctuate in a wide range due to the use of slim film capacitor. When the flux-weakening current is lower than-ψf/Ld during the high speed operation, the flux-weakening control loop will transform to a positive feedback mode, which means the reduction of flux-weakening current will lead to the acceleration of the voltage saturation, thus the whole system will be unstable. In order to solve this issue, this paper proposes a novel flux-weakening method for electrolytic capacitorless motor drives to maintain a negative feedback characteristic of the control loop during high speed operation. Based on the analysis of the instability mechanism in flux-weakening region, a quadrature voltage constrain mechanism is constructed to stabilize the ***, the parameters of the controller are theoretically designed for easier industrial application. The proposed algorithm is implemented on a 1.5 kW electrolytic capacitorless PMSM drive to verify the effectiveness of the flux-weakening performance.

关键词： Permanent magnet synchronous motor(PMSM) Electrolytic capacitorless drive flux-weakening control Voltage constrain Stable operation

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Sliding Mode High Speed control of PMSM for Electric Vehicle Based on flux-weakening control Strategy 36

Sliding Mode High Speed Control of PMSM for Electric Vehicle...

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第36届中国控制会议

作者： Dong Guo Venkata Dinavahi Qi Wu Wei Wang School of Electrical Engineering Liaoning University of Technology Department of Electrical and Computer Engineering University of Alberta

ISBN: (纸本)9781538629185

To broaden the speed range of PMSM（Permanent Magnet Synchronous Motor） for the electric vehicles and to improve the stability in the high speed and small torque operating conditions of the electric vehicles,the control strategy based on flux-weakening control algorithm,using voltage feedback method,combined with SMVSC（Sliding Mode Variable Structure control） algorithm,using the improved exponential reaching law and variable rate reaching law,is applied to the vector control system of PMSM for the electric *** solve the hysteretic nature caused by the introduction of integral link to the SMVSC algorithm,the method of the integral signal times the saturation function is *** the response speed and stability of the system are *** results show that the good anti-jamming capability is achieved and the working conditions requirement of wide speed range is met.

关键词： sliding mode variable structure control flux-weakening control speed control permanent magnet synchronous motor electric vehicles

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