A modified two-level three-phase quasi-soft-switching inverter

Yusheng Liu, Weimin Wu, Frede Blaabjerg, Henry Shu Hung Chung

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

4 Citations (Scopus)

Abstract

A traditional Voltage Source Inverter (VSI) has higher efficiency than a Current Voltage Source (CSI) due to the less conduction power loss. However, the reverse recovery of the free-wheeling diode limits the efficiency improvement for the silicon devices based hard-switching VSI. The traditional quasi-soft-switching inverter can alternate between VSI and CSI by using a proper control scheme and thereby reduce the power losses caused by the reverse recovery of the free-wheeling diode. Nevertheless, slightly extra conduction power loss of the auxiliary switch is also introduced. In order to reduce the extra conduction power loss and the voltage stress across the DC-link capacitor, a modified two-level three-phase quasi-soft-switching inverter is proposed by using a SiC MOSFET instead of an IGBT. The principle of the modified two-level three-phase quasi-soft-switching inverter is analyzed in detail. And the performance is verified through simulations and experiments on a 5 kW/380 V three-phase prototype.
Original languageEnglish
Title of host publicationProceedings of the 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Number of pages7
PublisherIEEE Press
Publication dateMar 2014
Pages261-267
Article number6803319
ISBN (Print)978-1-4799-2325-0
DOIs
Publication statusPublished - Mar 2014
EventApplied Power Electronics Conference and Exposition, APEC 2014 - Fort Worth, Texas, United States
Duration: 16 Mar 201420 Mar 2014

Conference

ConferenceApplied Power Electronics Conference and Exposition, APEC 2014
Country/TerritoryUnited States
CityFort Worth, Texas
Period16/03/201420/03/2014
SeriesI E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
ISSN1048-2334

Keywords

  • CSI
  • Efficiency
  • Operation principle
  • Quasi-Soft-Switching Inverter
  • Shoot-through
  • VSI

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