Decoupling Control of Permanent Magnet Synchronous Motor at High Speed and Low Switching Frequency

被引：0

作者：

Zhang Z. ^{[1
]}

Jing L. ^{[1
]}

Zhao Y. ^{[2
]}

Wu X. ^{[3
]}

Yang J. ^{[1
]}

Wang J. ^{[1
]}

机构：

[1] National Active Distribution Network Technology Research Center of Beijing Jiaotong University, Haidian District, Beijing

[2] Shenzhen Power Supply Bureau Co. Ltd., Shenzhen

[3] Collaborative Innovation Center of Electric Vehicles in Beijing, Haidian District, Beijing

来源：

Jing, Long (ljing@bjtu.edu.cn) | 1600年 / Chinese Society for Electrical Engineering卷 / 40期

关键词：

Digital delay; Low switching frequency; Parameter identification; Permanent magnet synchronous motor (PMSM); Phase lead angle; Predictive control;

D O I：

10.13334/j.0258-8013.pcsee.200007

中图分类号：

学科分类号：

摘要：

In order to solve the problem that current feedback control depends on motor parameters in the synchronous reference frame, a method of using current loop output to estimate inductance was proposed. However, in the case of low switching frequency, the delay caused by digital control can be equivalent to angle delay and time delay in synchronous reference frame. Angle delay affects output of the current loop, resulting in the errors of inductance identification. By drawing pole-zero map of the system, it can be found that time delay affects decoupling performance of the current loop. In order to eliminate the adverse effect of digital delay, a leading phase angle was introduced to eliminate the influence of the angle delay on inductance identification, and a predictive current feedback control was proposed to eliminate the time delay. Through above methods, the controller realized decoupling of torque component and flux. Finally, the feasibility and effectiveness of proposed method were verified by simulations and experiments. © 2020 Chin. Soc. for Elec. Eng.

引用

页码：6345 / 6353

页数：8

共 18 条

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