Design & Development of 5.5 kW DC to DC Buck-Boost Converter Controlling via PIC Microcontroller

Abstract

Many existing and developing electrical and electronic technologies require voltages of differing levels supplied from a singular available source voltage such as a battery. DC converters are devices designed specifically for the purpose of changing DC voltage levels efficiently. The converters are electronic devices, it has an output voltage magnitude that is either greater than or less than the input voltage magnitude. Rising energy intensity leads to a higher cost of delivering power and low power density. Meanwhile, the demand for compact power supplies grows significantly. It requires power supplies with high efficiency, low cost and smaller size. In order to control the output voltage of the converter, the controller is designed to change the duty cycle of the converter. In this converter IGBT switch is digitally controlled by PIC microcontroller. In this work simulation and then hardware implementation is done with results. The converter is mainly used, where load is very sensitive (battery Powered products), it provides variation of ±1% only.