The purpose of this study is to discuss the design and optimization of three-phase LLC resonant DCDC converter. This study aims to optimize the three-phase LLC resonant DCDC converter. This study uses a literature review method to understand the working principle and application of the three-phase LLC resonant DCDC converter. Based on the literature review, the advantages of the design and optimization of the three-phase LLC resonant DCDC converter are found. The research results show that the optimized three-phase LLC resonant DCDC converter has higher energy conversion efficiency and lower power loss. It has important practical significance for improving the efficiency and stability of energy conversion systems. This will promote the development of electric vehicle charging technology and information data processing technology as well as other technologies applying LLC resonant DCDC converters
