基于改进型比例谐振控制器的三相四线制光伏发电和有源滤波器系统

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Abstract For three-phase four-wire PV-AF (photovoltaic power generation and active filter) system, a control strategy based on proportional resonant (PR) controller is proposed. Improved PR controllers in parallel are adopted to track fundamental current and different frequency component of harmonic current to obtain zero steady-state error. With the power of photovoltaic system injecting, the quality of grid current is improved. The performance of PR controller and improved PR controller are compared. After analyzing the effect of every parameter of PR on control performance, the parameters are designed. The simulation and experiment results indicate that the current inner-loop controller can be better adapted to the fluctuation of grid frequency and track reference current, which verify the validity and effectiveness of the employed control strategy.

Key words： Four-leg grid-connected inverters proportional resonant control harmonic compensation frequency fluctuation

Received: 21 February 2013 Published: 25 March 2014

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TM615

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	Geng Yiwen
	Wu Xiaojie
	Zhou Dejia
	Xu Lihua

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Geng Yiwen,Wu Xiaojie,Zhou Dejia等. Research on Three Phase Four Wire PV-AF System Based on Improved Proportional Resonant Controllers[J]. Transactions of China Electrotechnical Society, 2013, 28(8): 142-148.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I8/142

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