A new zero voltage switching current fed zero-voltage switching isolated boost converter topology for fuel cell applications is presented. L-type half-bridge is more suitable to low voltage, high current applications such as front-end dc–dc converters for the fuel cell applications. It has larger switch voltage rating and also suffers from high voltage across the switches. Clamping methods are ...

This project aims to design and implementation of high efficiency and high step –up non-isolated DC-DC converter. The high power non –linear loads and low power loads produce voltage fluctuations, harmonic currents and an imbalance in network which results into lower Power factor operation of power supply. There is a need of improved Power factor and reduced harmonic current in input line. In t...

This paper introduces the use of the voltage multiplier technique and passive absorption circuit applied to the non-isolated dc-dc converter in order to obtain high efficiency and high voltage gain. A passive absorption circuit is inserted in the interleaved flyback converter to transfer the leakage energy to load. The operation principle of the circuit is explained. This paper also deals with ...

As the voltage gain of converter increases with same ratio, current also increases, this increase in gains will affect size input and output capacitor. To reduce ripple simultaneous decreasing ripple, a novel fed interleaved high is proposed by utilizing front-end structure Cockcroft Walton (CW)-Voltage Multiplier (VM). The “current fed” term used because, circuitry, all capacitors CW-VM are en...

Renewable electricity options, such as fuel cells, solar photovoltaic, and batteries, are being integrated, which has made DC micro-grids famous. For micro-grid systems, a multi input interleaved non-isolated dc-dc converter is suggested by the use of coupled inductor techniques. Since it compensates for mismatches in photovoltaic devices allows separate continuous power flow from these sources...