Title :
A new large DC gain converter based on a switched-capacitor-inductor circuit in conjunction with fuel cell
Author :
Xie, Ren ; Zhang, Longlong ; Mellincovsky, Martin ; Ioinovici, Adrain ; Xu, Dehong
Author_Institution :
College of Electrical Engineering, Zhejiang University, Hangzhou, China
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, what can benefit a DCM operation at light load. A dc analysis of the new circuit leading to the formula of the dc gain and a break-down calculation of the losses are given. Simulation results for a 100 V to 700 V, 10 kW step up converter, are given to verify the theoretical analysis.
Keywords :
Switches; Uninterruptible power systems; fuel cell; high step-up; switched-inductor; swithced-capacitor;
Conference_Titel :
Power Electronics and Motion Control Conference (IPEMC), 2012 7th International
Conference_Location :
Harbin, China
Print_ISBN :
978-1-4577-2085-7
DOI :
10.1109/IPEMC.2012.6258886
