A Novel High Step-up Voltage Gain DC-DC Converter with Low Source Current Ripple

In this paper, an interleaved boost converter topology with a high step up voltage gain and low source current ripple is proposed. The current in two interleaved inductors are controlled in phase opposition manner such that the ripple in the source current reduces by a greater extent. The operating principles and the steady state analysis of the proposed converter are presented in detail. The proposed converter offers high step up voltage gain in the full range of duty cycle in comparison to the existing boost converters. Furthermore, the voltage stress across the active switches, diodes and passive elements is low. The feasibility of the proposed converter is validated through experimental studies on a developed 400 W laboratory prototype to stepup the voltage from 25 V to 400 V.