Research on a New Harmonic Current Suppression Method for Boost Power Factor Correction

For boost power factor correction converters, achieving a balance between dynamic performance and low THD is a persistent challenge. A traditional solution is to use double loop control. However, to reduce the THD, the intrinsic double power frequency ripple of the output voltage limits the bandwidth of voltage loop. This results a very low dynamic performance. In order to achieve good dynamic performance, this paper presents a PIR-based harmonic compensation DQ decoupled control. This method achieves tracking of sinusoidal signals without errors, counteracts the influence of double power frequency ripple, and suppresses the generation of higher frequency harmonics by PIR controller, thereby enabling the voltage loop to be set to higher bandwidth and achieve good dynamic response. Subsequently, a simulation model is implemented in Simulink. The simulation results show that the proposed method has the lowest THD under full load compared to other method. When the load changes from 50% to 100%, the dynamic response of the proposed method is similar to PI+notch filter, but twice as fast as traditional PI control.