Non-isolated high gain quadratic boost converter based on inductor’s asymmetric input voltage

Abstract

This paper introduces the concept of inductors asymmetric input voltage to derive a new high voltage gain converter.The proposed converter has continuous input, positive output, and high-power density features suitable for renewable energy applications.The operating principle, steady-state performance, practical voltage gain, small-signal analysis, and efficiency of the converter are presented in this work.A comprehensive comparison is made with the high voltage gain converters available in literature in terms of component count, voltage gain, effectiveness index, voltage and current stress on the power devices, per unit switching device rating, and other features like output polarity and availability of common ground.The proposed topology possesses a higher effectiveness index and lower switching device power rating (SDP), resulting in a good form factor.To validate the performance of the proposed converter, the experiments are conducted on the 150 W laboratory prototype, and corresponding results are presented in this work.