基于增强型扰动观测器的五相永磁同步电机鲁棒电流控制策略

doi:10.19595/j.cnki.1000-6753.tces.181814

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Abstract 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.

Key words： Five-phase permanent magnet synchronous motor harmonic disturbance enhanced disturbance observer proportional-integral (PI) control robustness

Received: 20 November 2018 Published: 27 March 2020

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TM351

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	Xiong Cong
	Xu Haiping
	Guan Tao
	Zhou Peng

Cite this article:

Xiong Cong,Xu Haiping,Guan Tao等. A Robust Current Control Scheme for Five-Phase Permanent Magnet Synchronous Motor Based on Enhanced Disturbance Observer[J]. Transactions of China Electrotechnical Society, 2020, 35(6): 1219-1230.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181814 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I6/1219

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