Performance analysis of LCLC resonant converter with PI and fuzzy gain scheduled PI controllers

Abstract

Purpose

The purpose of this paper is to analyze the performance of LCLC resonant converter (RC) with proportional integral controller and fuzzy gain scheduled proportional integral controller.

Design/methodology/approach

The drawbacks of series RC and parallel resonant converter (PRC) are explained using relevant references in Section 1 of this paper. The necessity of RCs and the merits of zero voltage and zero current switching are given in the Section 2. In Section 3, the modeling of LCLC RC using state space technique is done. In Section 4, the open loop analysis and performance evaluation of proportional integral controller, fuzzy gain scheduled proportional controller using MATLAB Simulink is obtained. The hardware specification is given and experimental results are taken for LCLC RC. In Section 5, conclusion of study is given.

Findings

The LCLC RC overcomes the drawbacks of series and PRC. The fuzzy gain scheduled proportional integral controller is suitable for load variations in RC.

Originality/value

The output of the converter is not affected with the load variations since the controller suggested in the paper works for load changes and can be a solution for load parameter deviation applications. Also performance of the RC is improved by the fast response of the proposed controller.

Citation

Lourdusami, S.S. and Vairamani, R. (2016), "Performance analysis of LCLC resonant converter with PI and fuzzy gain scheduled PI controllers", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 35 No. 5, pp. 1560-1574. https://doi.org/10.1108/COMPEL-04-2016-0130