Research on Phase Shift Full Bridge Converter Based on Nonsingular Terminal Sliding Mode Technology

Abstract

In order to solve the problem of slow dynamic response and poor anti-interference performance of traditional phase shift full bridge converter in double closed-loop proportional integral(PI) control. In this paper, a phase shift full bridge converter based on nonsingular terminal sliding mode technology is proposed. The voltage loop uses a non singular terminal sliding mode controller, and the current loop uses a traditional proportional integral controller. Finally, the simulation is used to compare the nonsingular terminal sliding mode double closed-loop control strategy with the traditional double closed-loop control scheme. The results show that the proposed control strategy has good robustness when the load changes, suppresses high-frequency chattering, shortens the transition time, and meets the requirements of high-quality power.