A Robust Current Control Scheme for Five-Phase Permanent Magnet Synchronous Motor Based on Enhanced Disturbance Observer

被引：0
|
作者：
Xiong C. [1 ,2 ]
Xu H. [2 ]
Guan T. [2 ]
Zhou P. [2 ]
机构：
[1] University of Chinese Academy of Sciences, Beijing
[2] Key Laboratory of Power Electronics and Electric Drive, Institute of Electrical Engineering Chinese Academy of Sciences, Beijing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 06期
关键词：
Enhanced disturbance observer; Five-phase permanent magnet synchronous motor; Harmonic disturbance; Proportional-integral (PI) control; Robustness;
D O I：
10.19595/j.cnki.1000-6753.tces.181814
中图分类号：
学科分类号：
摘要：
The dual synchronous rotating frame proportional integral (PI) control is most frequently employed in five-phase permanent magnet synchronous motor drives. However, its control performance is easily affected by disturbances such as parameter perturbation and inverter nonlinearity. Due to the limited bandwidth of the PI controller, there is usually a low-order harmonic current caused by the dead time of the inverter in the stator current. Therefore, this paper proposes a proportional integral control method based on the enhanced disturbance observer (EDOB-PI). The disturbances existing in the five-phase permanent magnet synchronous motor are classified and modeled. Then a disturbance observer is designed to observe the disturbance. Finally, the disturbance is compensated by the feed-forward channel. This method can improve parameter perturbation robustness and suppress low-order harmonic current caused by dead time and harmonic rotor permanent magnet flux. The experimental results have verified the proposed method. © 2020, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1219 / 1230
页数：11
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