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This paper deals with a current-fed full bridge dc-dc converter. By the results of an analytical investigation, the impact of the transformer's winding ratio, its leakage inductance and dimension of input inductor on the converter's efficiency is emphasized. Out of this, design considerations for the converter are given. Experimental results, taken from a 1.2 kW prototype, are shown.
In this paper, an overview of the, for a converter design most important, fuel cell characteristics is given. Different DC-DC converter topologies are presented. Their qualification for a low-input voltage, high-input current application is discussed. A comparison of the converters is given with regard to the power range they are appropriate for. The limiting factors for the transferable power are...
This paper deals with a single phase current- fed full bridge converter with high voltage gain for fuel cell applications. The clamping circuit is implemented by an auxiliary buck converter. An analytical investigation is given, describing the operating behaviour of the converter completely. This includes a distinction of the three operating modes: continuous mode, discontinuous mode and buck mode...
Fuel cells at moderate power levels have a high output current and low output voltage. In order to make them usable for applications with a higher voltage demand, a DC-DC converter with large voltage gain is needed. This paper deals with a voltage-fed full bridge converter that is designed to reach a high voltage gain. Analytical calculations are given, completely describing the operating behaviour...
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