Author: A. S. Werulkar, P.S.Kulkarni.
Abstract: This paper presents the design and development of a Microcontroller (8051) based Soft switching ZVS DC-DC Resonant Buck Converter for Solar Battery Charger System. In this work, 17.5V DC voltage received from solar panel is stepped down to 15V and lead acid battery of 12V/45Ah is charged. Soft-switching (ZVS-zero voltage switching technique) of the Buck converter is implemented to improve the efficiency of the converter and it is observed that efficiency of the converter is between 55% to 88 %. For load variation from 4W to 48W.KEIL Micro vision software is used as a compiler to generate required hex file for the Microcontroller.
Keywords: Auxiliary resonant circuit, Microcontroller, photovoltaic (PV), soft-switching buck converter, zero voltage switching (ZVS).
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