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

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

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. © 2014 IEEE.
Original languageEnglish
Title of host publicationConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
PublisherIEEE
Pages261-267
ISBN (Print)9781479923250
DOIs
Publication statusPublished - 2014
Event29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014 - Fort Worth, United States
Duration: 16 Mar 201420 Mar 2014

Conference

Conference29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
PlaceUnited States
CityFort Worth
Period16/03/1420/03/14

Research Keywords

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

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