| Phase shift full bridge ZVS soft switch conversion circuit has the advantages of simple control, high reliability and high efficiency, but it also has some problems, such as duty cycle loss, hard to realize the lag arm soft switch, and peak voltage at the rectifier side. In order to make up for the loss of duty cycle, the principle and working mode of phase-shifted full bridge are deeply analyzed, and the method of saturated inductance is proposed to solve the problem of duty cycle loss in the topology structure. Finally, MATLAB/ Simulink simulation software is used to simulate the PSFB-ZVS topology, combined with reasonable parameters, the correctness and validity of the theoretical analysis are verified. |