A Novel ZVS Bidirectional DC-DC Converter for Fuel Cell Applications
Keywords:
Bidirectional dc-dc converter, current tripler rectification, fuel cell, zero voltage switching.Abstract
In this paper a new bidirectional dc-dc converter
for a fuel cell system is proposed that has a current tripler
rectifier in its low voltage side. The converter is based on a ZVS
half bridge topology with current tripler rectifier at the
secondary side of transformer. The asymmetrical PWM is used
in the converter to achieve ZVS of power switches and to
regulate the output voltage at the desired value. The proposed
converter has the advantages of high efficiency, high power
density and simple circuit configuration. The operation
principle and system analysis are described and discussed.
Finally, the simulation results for the proposed converter are
provided to verify the theoretical analysis.
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