谐振式混合C型有源滤波器设计与研究

Research on Design of Resonant Hybrid C Type Active Power Filter

电网中除了特征谐波外,还存在大量非特征谐波,普通的无源滤波器不能将其滤除,以致引起谐振而烧毁滤波器。针对这一问题,提出了一种谐振式混合C型有源滤波器结构,并对该新型有源滤波器的无源和有源参数进行了研究设计,得到了混合有源滤波器的设计方法。分析了其工作原理,提出了同时检测负载和电网谐波电流的复合控制方法。仿真和实验研究表明,与单调谐混合有源滤波器相比,以该方法设计的混合有源滤波器滤波效果优异,工程应用前景看好。

Besides characteristic harmonics,there are many non-characteristic harmonics in power system.The common passive filter cannot deal with it,which worsens the, filter performance and may be results in the resonance to destroyed the filter device.According to this problem,the paper presents a novel resonant C type hybrid active power filter （RCHAPF） and makes research on its design method.The principle of RCHAPF is analyzed and a complex control strategy for detecting both load harmonics and grid harmonics is proposed.Simulative and experimental results show that the RHCAPF has more excellent performance and better application outlook than the single tuned hybrid APF.