A transformer assisted zero-voltage soft-switching three-level active neutral-point-clamped converter

Jin Li, Jinjun Liu, Dong Dong, Paolo Mattavelli, Dushan Boroyevich, Yaosuo Xue

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

5 Scopus citations

Abstract

A novel transformer assisted three-level zero-voltage switching (ZVS) converter is proposed in this paper. The proposed topology features simple structure and good ZVS performance. The auxiliary circuit structure and the modulation method are as simple as in the two-level converter. Only two auxiliary switches, four auxiliary diodes and a two-winding transformer are needed to achieve the soft-switching of all the main switches in one phase leg. Besides the great losses reduction on main device, the auxiliary circuit operates only at the switching transition and has a lower current rating and no switching losses. The operation principle is analyzed and an eighty kW half-bridge prototype was built. The experimental results are provided to verify the effectiveness of the topology.

Original languageEnglish
Title of host publicationAPEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition
Pages2421-2427
Number of pages7
DOIs
StatePublished - 2012
Externally publishedYes
Event27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012 - Orlando, FL, United States
Duration: Feb 5 2012Feb 9 2012

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Conference

Conference27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012
Country/TerritoryUnited States
CityOrlando, FL
Period02/5/1202/9/12

Keywords

  • Power conversion
  • active rectifier
  • inverter
  • multilevel converter
  • zero-voltage switching

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