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High Step-Up DC–DC Converter Based on Switched Capacitor and Coupled Inductor

2017; Institute of Electrical and Electronics Engineers; Volume: 65; Issue: 7 Linguagem: Inglês

10.1109/tie.2017.2774773

1557-9948

Gang Wu, Xinbo Ruan, Zhihong Ye,

Multilevel Inverters and Converters

Due to the relatively low output voltage of photovoltaic (PV) source, a high step-up converter with high efficiency is needed when the PV source is connected to the power grid. A novel high step-up converter based on two switched capacitors and a coupled inductor is proposed in this paper. The operating principle is analyzed and the voltage gain is derived. A 100-W prototype is fabricated in the laboratory to verify the theoretical analysis, and the highest efficiency is 96.4%.