Evaluation of the Impact of Switching Speed on Inductors in SiC Converters

Binyu Cui, Jun Wang, Juefei Yang, Xibo Yuan*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

The implementation of the Silicon Carbide (SiC) semiconductor device enables higher switching fre-quency and higher switching speed in power electronic converters. While the high switching speed (dv/dt) effect of SiC devices is relatively well understood at the power device level, limited research has been conducted to reveal its impact on the magnetic components (e.g. inductors) in a power converter. This work carries out an experimental evaluation of the switching speed impact with respect to the mag-netic core loss and parasitic capacitance of a filter inductor. A Triple Pulse Test procedure is applied to the inductor to provide high-voltage, large-signal excitement, with two testing variables considered, i.e. frequency and flux density swing. Core loss under various switching speed settings and dc-bias levels have been tested and compared. The results show the changes in core loss are not strongly related to the variation of the switching speed. An abnormal current distortion caused by the inductor parasitic capacitance has been observed under the high switching speed. An equivalent model and verification regarding the capacitance properties are provided. The effect of parasitic capacitance on core loss un-der different switching speeds is also evaluated.
Original languageEnglish
Title of host publicationPCIM Europe 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM Europe)
PublisherVDE Verlag
Pages429-435
ISBN (Print)978-3-8007-6091-6
DOIs
Publication statusPublished - 9 May 2023
EventInternational Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2023 - Nuernberg, Germany
Duration: 9 May 202211 May 2023
https://pcim.mesago.com/nuernberg/en.html

Publication series

NameInternational Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
ISSN (Print)2510-7704

Conference

ConferenceInternational Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2023
Abbreviated titlePCIM
Country/TerritoryGermany
CityNuernberg
Period9/05/2211/05/23
Internet address

Keywords

  • triple pulse test
  • core loss
  • SiC

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