Design, Simulation, Validation and Comparison of New High Step-up Soft Switched Converter for Fuel Cell Energy System
Spring 2017, Volume 1 - Number 1 علمی-پژوهشی (وزارت علوم) (8 صفحه - از 53 تا 60)
Fuel cell energy systems can deliver green energy efficiently without CO2 emissions, which are nominatedas a substitution choice for the conventional power sources. This paper proposes a new high stepupDC-DC converter which is applicable in distributed energy resources, especially for fuel cell powerconditioning systems. The converter contains a bidirectional boost cell with a coupled inductor, twotransformers whose secondary sides are connected in series to increase the voltage gain and also a voltagedoubler. Leakage inductance of the coupled inductor limits the currents of output diodes and results inZero Current Switching (ZCS) of the diodes. The converter schematic is presented at first and then itsanalysis results in different modes of operation are given. After that the theoretical formulation of voltagegain are achieved and proved. Finally, simulations results for a 400 W/ 380 V load are presented tovalidate the claimed characteristics of the proposed converter.
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