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Novel High Step-Up DC–DC Converter With Coupled-Inductor and Switched-Capacitor Techniques for a Sustainable Energy System.

Novel High Step-Up DC–DC Converter With Coupled-Inductor and Switched-Capacitor Techniques for a Sustainable Energy System.

Authors :
Yi-Ping Hsieh
Jiann-Fuh Chen
Tsorng-Juu Liang
Lung-Sheng Yang
Source :
IEEE Transactions on Power Electronics. Dec2011, Vol. 26 Issue 12, p3481-3490. 10p.
Publication Year :
2011

Abstract

In this paper, a novel high step-up dc-dc converter is proposed for a sustainable energy system. The proposed converter uses coupled-inductor and switched-capacitor techniques. The capacitors are charged in parallel and discharged in series by the coupled inductor to achieve high step-up voltage gain with an appropriate duty ratio. Besides, the voltage stress on the main switch is reduced with a passive clamp circuit; low on-state resistance Rds(on) of the main switch can be adopted to reduce the conduction loss. In addition, the reverse-recovery problem of the diode is alleviated by a coupled inductor. Thus, the efficiency can be further improved. The operating principle and steady-state analyses of voltage gain are discussed in detail. Finally, a prototype circuit with 24-V input voltage, 400-V output voltage, and 200-W output power is implemented in the laboratory to verify the performance of the proposed converter. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
08858993
Volume :
26
Issue :
12
Database :
Academic Search Index
Journal :
IEEE Transactions on Power Electronics
Publication Type :
Academic Journal
Accession number :
101263316
Full Text :
https://doi.org/10.1109/TPEL.2011.2160876