A Double Duty Converter: A New High Gain Modified Triswitching State Boost Converter for Nanogrid Application

Abstract

This paper proposes a new structure of high gain DC-DC converter named as Double Duty Converter (DDC) with voltage boosting module and showing the wide voltage gain control. The proposed converter is operated with three switches which are controlled by two different duty pulses. Therefore, the voltage gain of the proposed converter depends on the two pulses which allow the converter to operate with high voltage gain at a low duty ratio. The key features of the proposed configurations are: i) three switches are controlled by two different duty cycles for wide voltage control, ii) continuous input current, iii) lower voltage stress on the switch, and iv) high voltage gain. Mathematical analysis, operational modes of the proposed converters and effect of the Effective Series Resistance (ESR) of inductors and diodes on voltage gain are presented in detail. Finally, the proposed converter configuration is validated using detailed simulation studies