Three level DC-DC boost converter for high conversion ratio

Abstract

This paper present three level DC-DC boost converter topology for high conversion ratio. This topology is a combination of traditional boost topology with voltage multiplier. The Traditional boost converter is unable to provide high gain ratio since it has high voltage stress and high duty cycle, hence the three level DC-DC boost converter is used which gives the reliable high conversion ratio. The main advantage of proposed topology is output voltage can be increased by using the combination of capacitors and diodes at output side of the converter, without altering main circuit. Proposed circuit is used for high power application with severe duty cycle. The proposed three level dc-dc boost converter topology consists of 5 capacitors, 7 diodes, 2 inductors and a switch. The design parameters of proposed topology are input voltage, output voltage and duty cycle which are of the ratings 28V, 167V and 46% respectively. The verification of proposed topology is done by experimental results.