入网电压控制型逆变器直流分量的动态分析与消除

doi:10.19595/j.cnki.1000-6753.tces.L70407

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Abstract This paper focusses on the problem of direct current injection caused by voltage-controlled inverter connection. Based on the axial-voltage regulation single phase LCL inverter, the mathematical model of grid connected inverter has been built. This paper shows the details of mathematical analysis and formula derivation by analyzing the reasons of DC component indection. The result shows that the DC component has a nearly linear relationship with the voltage amplitude and frequency. Thus, this paper proposes the current deviation compensation (CDC) control strategy to diminish and eliminate the impacts of DC component. This strategy can compensate the injection direct current when the grid voltage and frequency fluctuation happen. The CDC control can also improve the performance of voltage-controlled inverter at the same time. Finally, simulation and experiment verify the effectiveness of the proposed control strategy.

Key words： Axial voltage regulation voltage control type grid-connected inverter DC component current deviation compensation

Received: 11 January 2016 Published: 30 August 2017

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TM464

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	Articles by authors
	Gao Jiayuan
	Zhao Jinbin
	He Chaojie
	Zhang Shuaitao
	Qu Keqing

Cite this article:

Gao Jiayuan,Zhao Jinbin,He Chaojie等. Dynamic Analysis and Elimination of DC Component of Grid Connected Voltage Controlled Inverter[J]. Transactions of China Electrotechnical Society, 2017, 32(16): 194-202.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70407 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I16/194

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