Steady State Analysis of LCLC Resonant Converter with Capacitive Output Filter

Subject Areas : Renewable energy

Navid  Shafiyi ¹ (MSc/Islamic Azad University, Najafabad Branch)
Hosein  Farzanehfard ² (Associate Professor/Isfahan University of Technology)
Mehrdad  Jafarboland ³ (Associate Professor/Maleke-ashtar University of Technology, Isfahan)

Received: 2009-11-21 Accepted : 2010-04-24 Published : 2010-02-01

Keywords: output Filter, Fourth order LCLC resonant converter, steady state analysis, capacitive,

Abstract :

This paper presents the mathematical analysis and modeling of a 4th order LCLC resonant converter with capacitive output filter in steady-state condition. Due to the nonlinearity of the LCLC resonant circuit with capacitive output filter, the conventional modeling procedure cannot thoroughly describe the behavior of the converter. In this paper, a mathematical model is proposed that can accommodate the absence of the output inductor and predict the converter performance for a wide range of operating conditions. A 2.25KW prototype converter is provided to evaluate the accuracy of the proposed model. Experimental results show that the proposed model can precisely predict the behavior of the converter for a wide range of operating conditions.