Novel high step-up DC-DC converter with coupled-inductor and switched-capacitor techniques for a sustainable energy system

Yi Ping Hsieh, Jiann Fuh Chen, Tsorng Juu Liang, Lung Sheng Yang

Research output: Contribution to journalArticlepeer-review

152 Citations (Scopus)

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 R ds(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.

Original languageEnglish
Article number5934597
Pages (from-to)3481-3490
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume26
Issue number12
DOIs
Publication statusPublished - 2011 Dec 19

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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