提出了一种混合有源滤波器 ( HAPF) ,由小功率有源滤波器 ( APF)和单调谐无源滤波器( PF)组成 ,用于抑制工厂供电系统的谐波谐振。传统的 PF为了满足失谐情况下的滤波要求 ,不得不降低调谐税度 Q而牺牲滤波效果。文中所提方法通过对 APF的控制 ,可以无限提高 PF的品质因数 ,有效地改善 PF的滤波效果 ,实验结果验证了 HAPF的可行性和有效性 A hybrid active filter (HAPF) is proposed, which consists of a low power active filter (APF) and a single tunable passive filter (PF) to suppress the harmonic resonance of the power supply system in the factory. In order to satisfy the filter requirement in the detuning situation, the traditional PF has to reduce the tuning tax rate Q and sacrifice the filtering effect. Through the control of APF, the proposed method can improve the quality factor of PF indefinitely and effectively improve the filtering effect of PF. The experimental results verify the feasibility and effectiveness of HAPF