准谐振控制器在抑制永磁同步电动机共模电压上的应用

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Abstract The high frequency common-mode voltage producing by the PWM inverter can induce high-amplitude voltage on shaft of the motor. And the voltage on the shaft can generate shaft current that may shorten the life of the motor. In this paper, take the source of voltage PWM inverter for example, beginning with the mechanism of the common-mode voltage, it is found that the common- mode voltage is consisted by a series specific harmonics. According to the forward mentioned, a new control strategy that using the quasi-resonant controller for suppressing the common-mode voltage is proposed. Because of the giant at the resonant frequency is infinity, it can realize zero steady-state error control for the sinusoidal signal with the same frequency. So connecting the resonant controller to the conventional PI controller, focusing on the high-amplitude part of the common-mode in order to suppression the common-mode voltage. Simulation and experiment results verify the effectiveness of the proposed strategy.

Key words： PMSM common-mode voltage resonant controller SPWM inverter

Received: 10 September 2012 Published: 25 March 2014

PACS:

TM351

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	Huang Shoudao
	Zhang Wenjuan
	Gao Jian
	Xiao Lei

Cite this article:

Huang Shoudao,Zhang Wenjuan,Gao Jian等. Application of Quasi-Resonant Controller for Suppressing the Common-Mode Voltage of Permanent Magnet Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2013, 28(3): 93-98.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I3/93

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