An Electrical Isolated DC Power Supply with Two Ports Based on LLC Resonant Converter

Abstract

A modified LLC resonant converter is proposed for isolated dc power supply where two ports are needed. The converter can supply different dc voltages for two isolated loads, and the resonant parameters of two LLC channels can be designed as different. The topology of the proposed LLC resonant converter is introduced, the voltage gain is detailed discussed. A simulation model is built to verify the correctness of the proposed LLC resonant converter`s theory. The simulation results verify that the converter can supply two different dc voltages, and the voltages can keep steady even the load states are changed suddenly.