【摘要】 有源电力滤波器(APF)是抑制电网谐波的新型方法,其补偿性能主要取决于谐波检测环节和控制环节,同时直流侧稳压控制是APF正常工作的前提。引入滑窗迭代DFT谐波电流检测方法;提出一种稳压电流各相均分的直流电压控制策略;从功率平衡的角度分析了电压环PI调节器参数设计方法。建立仿真模型及设计实验样机,仿真和实验均验证了滑窗迭代DFT法谐波检测的快速性和精确性,以及所提直流侧稳压控制策略的正确性。更多还原

【Abstract】 The active power filter( APF) is a novel method of dynamic harmonic suppression. The compensation performance of APF is determined by the link of detection and control. At the same time,the DC voltage balance control is the prerequisite for APF to work normally. The detection method of harmonic current based on sliding-window iterative algorithm of DFT is introduced in this paper. And a DC side voltage control strategy is proposed based on each phase split current. The design method of PI parameter for voltage loop from the perspective of power balance,therefore,the simulation model is set up and the experimental prototype is designed. The correctness of sliding-window iterative algorithm of DFT and proposed DC side voltage control strategy is verified by simulation and experiment.更多还原