High-Efficient High-Voltage-Gain Capacitor Clamped DC–DC Converters and Their Construction Method
Yangbin Zeng, Hong Li, Wencai Wang, Bo Zhang, Trillion Q. Zheng
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.