Research on Three Phase Four Wire PV-AF System Based on Improved Proportional Resonant Controllers
Geng Yiwen1, Wu Xiaojie1, Zhou Dejia2, Xu Lihua1
1. China University of Mining and Technology Xuzhou 221008 China 2. Navy Academe of Armament, Fengtai District Beijing 100161 China 3. Key Laboratory of Control of Power Transmission and Transformation (Shanghai Jiao Tong University), Ministry of Education Shanghai 200240 China
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.
耿乙文, 伍小杰, 周德佳, 1 sup 乔树通 sup 3 sup. 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[J]. 电工技术学报, 2013, 28(8): 142-148.
Geng Yiwen, Wu Xiaojie, Zhou Dejia, Xu Lihua. Research on Three Phase Four Wire PV-AF System Based on Improved Proportional Resonant Controllers. Transactions of China Electrotechnical Society, 2013, 28(8): 142-148.
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2013, Vol. 28 
