AN ISOLATED THREE-PORT BIDIRECTIONAL DC-DC CONVERTER FOR PV BATTERY APPLICATION

Abstract

this paper anisolated three-port bidirectional DC-DC converter for Photovoltaic (PV) battery application is presented. This converter is capable of parallel power management of various renewableenergy sources. The proposed converter is designed for controlling power of photovoltaic panel, load and rechargeablebattery. The advantage of this converter is it utilizes less number of controllable switches and provides soft switching for converter primary switch. This is achieved by an inductor-capacitor-inductor resonant circuit. This converter has ability to control the battery power when there is a low and extra power according to load, and also to control maximum power point tracking for PV system. MATLAB Simulink software is used for simulation studies. Simulation results shows that irrespective of variation in solar radiation this converter is capable of maintain constant output DC link voltage by managing power between two sources.