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High Step up Switched Capacitor Inductor DC-DC Converter for UPS System with Renewable Energy Source

Maheshkumar. K and S. Ravivarman
K.S. Rangasamy College of Technology, Tiruchengode, Namakkal-637 215
Abstract—A new converter using a switched-inductor cell integrated with a switched-capacitor cell within a boost-like structure is proposed. The converter can achieve a very high dc conversion ratio. It can serve as the front-end dc-dc converter for a fuel cell in a UPS system. The inductors and capacitors are switched in a parallel-series configuration. The charging circuit of the inductors from the source is separated from the load. A dc analysis of the new circuit leading to the formula of the dc gain and a breakdown calculation of the losses are given. The proposed Switched Capacitor Inductor (SCI) converter circuit can meet the high efficiency requirement and simple structure. A small resonant inductor is used in these converters to limit the current peak caused by switched capacitor. Therefore, the SCI converters have good performance and high efficiency as well the voltage stress of the converter is reduced. In order to verify the proposed Switched Capacitor Inductor (SCI) dc-dc converter, modeling and simulation was carried out by using MATLAB.
 
Index Terms—switched capacitor, switched inductor, high voltage gain

Cite: Maheshkumar. K and S. Ravivarman, "High Step up Switched Capacitor Inductor DC-DC Converter for UPS System with Renewable Energy Source," International Journal of Electronics and Electrical Engineering, Vol. 3, No. 2, pp. 89-94, April 2015. doi: 10.12720/ijeee.3.2.89-94
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