WANG Xing1, CHEN Gong xun2, HAN Qi guo1

 

(1. College of Automation, Hangzhou Dianzi University, Hangzhou 310018, China;

 

2. College of Educational Science & Technology, Zhejiang University of Technology, Hangzhou 310023, China)

 

 

Abstract: In order to solve the problem of the analysis and calculation of resonant parameters,that is complexed due to the existence of output rectifier in LCC series parallel resonant converter, the nonlinear load of C filter LCC series parallel resonant converter was linearized by using Rectifier compensated first harmonics approximation (RCFHA) and the equivalent model composes RC series circuit, which simplified the analysis and parameters calculation of the resonant converter. A simple design procedure was presented by the example of an 18kV/100mA high voltage DC power supply applied in the electrostatic precipitators based on the analysis, the accuracy of the equivalent model and design method was verified by the simulation in PSIM. The research results show that there is little error between the parameters designed by the method and the actual LCC resonant converter, the accuracy linearized equivalent model can be obtained easily for the electrostatic precipitators by the method, and that will be guidance significance in parameters calculation and characteristics analysis for the LCC series parallel resonant converter.

 

Key words: rectifier compensated first harmonics approximation; LCC resonant converter; parameters design