Abstract：An improved repetitive control and its optimization method for active power filter(APF) is proposed. Low-pass filter with zero-phase-shift is employed for delay part of repetitive control to make better tradeoff between robustness and performance, and compensation part based on linear lead compensation function and a low-pass filter is designed so that the control method could be independent on the precise model of the plant. Then immune feedback method with nonlinear function of error and error rate is presented to assure suitable amount of stability margin and dynamic response speed. At last, parameters of the improved repetitive control are optimized with the target of lower error for harmonic tracking, and particle swarm optimization (PSO) is utilized to optimize the control parameters. Experimental results of APF under steady and dynamic conditions verify the correctness and effectiveness of the proposed design method.
于晶荣, 粟梅, 孙尧. 有源电力滤波器的改进重复控制及其优化设计[J]. 电工技术学报, 2012, 27(2): 235-242.
Yu Jingrong, Su Mei, Sun Yao. Improved Repetitive Control and Its Optimization for Active Power Filter. Transactions of China Electrotechnical Society, 2012, 27(2): 235-242.
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2012, Vol. 27 
