Abstract
ABSTRACT In this letter, a novel topology of a non-isolated high voltage gain dc-dc converter is proposed. The topology is based on the diode-capacitor voltage multiplier stages, integrated with inductor-based boost stages at the input. Due to reduced voltage imbalance between the voltage multiplier stage capacitors the design features low spikes in the switch current. Consequently the switch current stress, as well as conduction and switching losses are reduced accordingly. The proposed converter can draw continuous current either as a multiport converter from two input sources or from a single source as an interleaved converter and achieves a voltage gain of 15 with two voltage multiplier stages. A 400 W prototype of the converter with Vin = 20 V and Vout = 300 V has been implemented to validate the enhancement.
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