Referenced Items are not available for this document.
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.
Published in:
Power Electronics, IEEE Transactions on
(Volume:26
,
Issue:
12
)
Date of Publication: Dec. 2011
- Page(s):
- 3481 - 3490
- ISSN :
- 0885-8993
- INSPEC Accession Number:
- 12403256
- Digital Object Identifier :
- 10.1109/TPEL.2011.2160876
- Product Type:
- Journals & Magazines
- Date of Publication :
- 27 June 2011
- Date of Current Version :
- 01 December 2011
- Issue Date :
- Dec. 2011
- Sponsored by :
- IEEE Power Electronics Society
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