Circuit Simulation of MPPT Charge Regulator Based on Soft Switching

In order to improve the energy utilization rate of solar cells, as well as reduce the switching loss, a Maximum Power Point Tracking (MPPT) control strategy is proposed to control the Buck converter and realize soft switching: The MPPT control Buck mode is designed in the discontinuous conduction mode (DCM), the soft switching of MOSFET is achieved by the resonance of inductance, junction capacitance of MOSFET and junction capacitance of diode. Then, the conditions for generating resonance are analyzed. Finally, the simulation verification is completed in PLECS.