Abstract
Due to the low output voltage of photovoltaic cells and fuel cells, a high-voltage-gain dc-dc converter is indispensable in the renewable energy power generation systems. In this article, a series of high-voltage-gain capacitor clamped dc-dc converters is constructed based on interleaved boost structures by considering the requirement of low input current ripple in fuel cell application. Furthermore, the construction method of capacitor clamped dc-dc converters is summarized according to the construction processes of these converters. Finally, the capacitor clamped dc-dc converter with the voltage gain of 3/(1-D) is analyzed in detail. Then, a 250-W prototype is built to validate the theoretical analysis and the construction method.
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