Y-source impedance-network-based isolated boost DC/DC converter

Yam P. Siwakoti, Graham E. Town, Poh Chiang Loh, Frede Blaabjerg

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

7 Citations (Scopus)


A dc-dc converter with very high voltage gain is proposed in this paper for any medium-power application requiring a high voltage boost with galvanic isolation. The proposed converter topology can be realized using only two switches. With this topology a very high voltage boost can be achieved even with a relatively low duty cycle of the switches, and the gain obtainable is presently not matched by any existing impedance network based converter operated at the same duty ratio. The proposed converter has a Y-source impedance network to boost the voltage at the intermediate dc-link side and a push-pull transformer for square-wave AC inversion and isolation. The voltage-doubler rectifier provides a constant dc voltage at the output stage. A theoretical analysis of the converter is presented, supported by simulation and experimental results. A 250 W down-scaled prototype was implemented in the laboratory to demonstrate the feasibility and performance of the proposed converter topology.

Original languageEnglish
Title of host publication2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages5
ISBN (Print)9781479927050
Publication statusPublished - 2014
Event7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014 - Hiroshima, Japan
Duration: 18 May 201421 May 2014

Publication series

NameInternational Conference on Power Electronics
ISSN (Print)2150-6078


Other7th International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014


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