PWM Based Charge Controller For Renewable Energy Applications Using SEPIC Converter

Abstract

In this paper, PWM based charge controller for renewable energy applications using SEPIC converter is presented. The resources of the renewable energy have the low output voltage and high current undulation. For this purpose charge controllers which are based on PWM technique using SEPIC converter is used. SEPIC based converter is used because it has the ability of working in either step-up or step-down method and extensively used in battery operating devices. PWM based charge controller should be applicable to raise the output power which are depending on temperature of panel and on condition of irradiance. Also SEPIC converter is controlled through PWM based charge controller to maintain constant load voltage. To show the effectiveness of the design and validate the method MATLAB simulation is being used.