Research on Single-Phase and Three-Phase Compatible Isolated On-Board Charger and Control Technology

This paper presents a single-phase and three-phase compatible isolated on-board charger for electric vehicles. The is with the AC voltage input composed of two-stage circuits. Based on six-switch power factor correction (PFC) circuit, by switching off, front stage transformed into cascade topology totem-pole PFC circuit boost circuit. rear full-bridge LLC resonant converter. In or working mode, front-stage control strategy double closed-loop control. current inner loop controller improved PI repetitive are connected in parallel to form compound controller, which can effectively reduce total harmonic distortion current. By using simulation software MATLAB/Simulink, model was built. results verify correctness theoretical analysis.