Design of single-phase shifted full-bridge inverter voltage regulation system based on voltage-controlled closed-loop control and LLC resonant network

Abstract The phase-shifted full-bridge inverter is widely used in the field of power electronics technology, aiming to achieve precise regulation of the output voltage and improve the stability and efficiency of the power system. This paper proposes a single-phase phase-shift full-bridge inverter voltage regulation system and its parameter design method based on the LLC resonant network. Combined with voltage-controlled closed-loop control and APFC technology, the working mode of the system circuit is analyzed, and the system parameters are designed. The system simulation model is built in MATLAB/Simulink. The constant voltage output of the system is realized, the power factor is greater than 96%, and the relative error of the output voltage change is less than 2%.