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This paper presents a new topology for current fed push-pull-based DC-DC converters employing a low-voltage Fuel Cell (FC) as energy source. This DC-DC converter can be used in Single-Phase Distributed Generation (DG) systems. The work aims presenting new solutions for two important issues regarding fuel cells in DG applications. The first issue is related to the low-frequency ripple in the FC output...
Power conditioners for low-voltage DC sources in distributed generation usually have two major functions: to boost the energy source output voltage and to convert it into an AC voltage. The voltage boost is usually done by a DC-DC converter. This paper shows alternative topologies for standard DC-DC converters, in which the converter is series-connected with the source. The convenience of series-connected...
This paper proposes a ZVS-ZCS full-bridge converter for voltage step-up applications, where only a few solutions have been proposed in the literature. A new auxiliary circuit is used on the high-voltage side of the proposed converter to achieve Zero Current Switching (ZCS) for one converter leg, while Zero Voltage Switching (ZVS) is achieved for the other leg by means of snubber capacitors. The principle...
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