High step-up DC-DC converter with two transformers for low DC renewable energy systems

Jee Hoon Jung, Woo Young Choi, Shehab Ahmed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

A high efficiency, low profile, and high step-up dc-dc converter is proposed for low dc voltage renewable energy systems. The proposed converter employs an active-clamp technique with the complementary pulse width modulation (PWM) controller. Multiple transformers can be employed for a low profile design as well as multiple resonant rectifiers for the soft-switching operation of the output rectifying diodes. Two resonant-current paths formed by leakage inductance and output resonant capacitors achieve zero-current switching (ZCS) turn-off of the rectifying diodes. This ZCS turn-off is very desirable for reducing switching power losses for high step-up applications. An 800 W parallel output prototype of the proposed converter was built. An efficiency of 95 % was obtained at the rated load for a 30 V input voltage. Detailed analysis of power losses and experimental verification of the proposed converter with two transformers are presented in this paper.

Original languageEnglish
Title of host publication2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010
Pages1471-1477
Number of pages7
DOIs
Publication statusPublished - 2010
Event2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010 - Sapporo, Japan
Duration: 21 Jun 201024 Jun 2010

Other

Other2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010
CountryJapan
CitySapporo
Period21/6/1024/6/10

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Keywords

  • Active clamp
  • Renewable energy
  • Step-up converter
  • Two transformers

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

Cite this

Jung, J. H., Choi, W. Y., & Ahmed, S. (2010). High step-up DC-DC converter with two transformers for low DC renewable energy systems. In 2010 International Power Electronics Conference - ECCE Asia -, IPEC 2010 (pp. 1471-1477). [5544505] https://doi.org/10.1109/IPEC.2010.5544505