Optimization of Control Strategy for Charging Current Ripple of Passenger Car Chargers

In this paper, the problem of low-frequency ripple in the charging current of passenger car chargers was analyzed, a compound control algorithm combining quasi-proportional resonance and PI control was proposed according to the ripple characteristics, and a simulation platform was built to analyze the effect of the charger control strategy by verifying the role of the compound control algorithm on the physical charger. The simulation and onboard experiments show that the proposed control strategy has a good suppression effect on the charging current ripple of passenger car chargers.