AC-DC Fuzzy Linear Active Disturbance Rejection Control Strategy of Front Stage of Bidirectional Converter Based on V2G

Aiming at the problems of output voltage fluctuation and current total harmonic distortion (THD) in front stage totem-pole bridgeless PFC two-stage V2G (Vehicle to Grid) vehicle-mounted bi-directional converter, a fuzzy linear active disturbance rejection control strategy for front-stage AC-DC power conversion system is proposed. Firstly, topological working mode analyzed, mathematical model established. Combined with theory, double closed-loop controller designed second-order as outer loop PI inner loop. The can realize self-adaptive tuning proportional gain coefficient through reasoning control. Simulation experimental results show that this method better solve slow response high rate input effectively improve system’s robustness.