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

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 opera...

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Bibliographic Details
Published inIEEE transactions on industrial electronics (1982) Vol. 65; no. 7; pp. 5572 - 5579
Main Authors Wu, Gang, Ruan, Xinbo, Ye, Zhihong
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2018
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Capacitors
Converters
Coupled inductor
DC-DC power converters
dc–dc converter
Electric potential
Energy conversion efficiency
high voltage gain
Inductance
Inductors
nonisolated
Photovoltaic cells
Solar cells
switched capacitor (SC)
Switches
Voltage control
Voltage gain
Windings
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Summary: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%.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2017.2774773