基于自适应滤波理论 ,提出了一种对主电流进行自适应滤波的电力有源滤波器 .该电力有源滤波器以主电流为控制对象 ,控制电路比较简单 .推导了该电力有源滤波器的数学模型 ,并在此基础上 ,对该电力有源滤波器的性能进行了研究和分析 .实验结果证明此种电力有源滤波器是可行的 Based on the adaptive filtering theory, an active power filter is proposed to adaptively filter the main current. The active power filter is controlled by the main current and the control circuit is relatively simple. The power active filter , And on this basis, the performance of the APF is studied and analyzed.The experimental results show that the APF is feasible