LOW VOLTAGE APPARATUS ›› 2021, Vol. 0 ›› Issue (11): 67-72.doi: 10.16628/j.cnki.2095-8188.2021.11.010

• Converting Technology • Previous Articles     Next Articles

Parameter Optimization Design of LLC Resonant Converter

MA Chuangming1, HUANG Haihong1, CHANG Wenjing2   

  1. 1. School of Electrical Engineering and Automation,Hefei University of Technology, Hefei 230009, China
    2. State Grid Anhui Maintenance Company, Hefei 230000, China
  • Received:2021-07-08 Online:2021-11-30 Published:2022-01-25

Abstract:

LLC resonant converter topology has the advantages of simple structure,high efficiency,high power density,easy integration,etc.,and is widely used in medium and high power DC power supply.However,the resonant process is complex.The basic topology of one-way LLC resonant converter is adopted,and the optimization design method with clear LLC resonant parameters is proposed.The experimental waveforms of underresonant and over-resonant under open-loop debugging are obtained by the experimental prototype.The rationality and universal applicability of the resonant parameter optimization design are verified by the realization of ZVS of the primary side switch tube and ZCS of the secondary side rectifier tube and DC gain.

Key words: LLC, resonance parameter, fundamental wave analysis, ZVS, ZCS

CLC Number: