【摘要】 单相整流器会产生二次脉动功率,进而使直流母线电压出现二次脉动。一般采用很大体积的电容、电感构成谐振电路,来消除直流电压的二次脉动,但降低了整个系统的功率密度。本文基于功率解耦,提出了一种直流有源滤波方案,大大减小了滤波电感、电容,直流母线上只需要很小的支撑电容来滤除开关纹波。仿真表明了所提方法的正确性。更多还原

【Abstract】 The single PWM rectifier will produce a second-order ripple power for the reason of high power factor request.The ripple power leads to twice ripple voltage on the DC bus.The power pulsating is generally eliminated by a passive short-circuit link with bulk capacitor which results in low power density.This paper proposed an DC active power filter(APF) with power decoupling function.This topology can effectively reduce the energy storage capacitance.Simulation results show the theoretical analysis.更多还原