电容电流直接控制的双PWM协调控制策略

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Abstract In traditional control of AC-DC-AC PWM converter, the sudden change of the motor results in the fluctuating of the dc-link voltage. In order to maintain the dc-link voltage, a big capacitor is added, however, affecting the dynamics of the system. Considering the dc-link voltage and the dynamics, a new co-control strategy is given in this paper. With the control of the dc-link capacitor, the current out of the converter side can equal to that in the inverter side, which not only reduce the dc-link capacitor, but also improves the dynamics of the system. For further research in the control strategy, the small-signal model is introduced for study of the robustness and dynamics of the system.

Key words： Co-control capacitor current dc-link voltage small-signal model

Received: 01 November 2010 Published: 07 March 2014

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TM464

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	Articles by authors
	Dai Peng
	Zhu Fangtian
	Zhu Rongwu
	Chen Gen

Cite this article:

Dai Peng,Zhu Fangtian,Zhu Rongwu等. Direct Control of Capacitor Current for AC-DC-AC PWM Converter[J]. Transactions of China Electrotechnical Society, 2011, 26(1增): 136-141.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I1增/136

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