Estimation Method for Turn-off Collector Voltage of IGBTs Using Emitter-auxiliary Inductor

Haoze Luo, Francesco Iannuzzo, Frede Blaabjerg, Wuhua Li, Xiangning He

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

2 Citations (Scopus)

Abstract

This paper presents a method for estimating the instantaneous turn-off collector voltage of high-power IGBT modules. Because of the parasitic inductors in circuit, the fast turn-off collector current usually leads to a voltage overshoot on IGBT modules during the turn-off transition. In terms of high-voltage and high-power IGBT module, there exists an emitter-auxiliary inductor between the power emitter and Kelvin emitter. The same variable dic/dt during turn-off transition will also induce a measurable voltage veE across the emitter-auxiliary inductor LeE. As a result, the hazardous turn-off peak collector voltage can be reflected by the induced νeE in the case of fixed commutation loop inductors and emitter auxiliary inductor. Finally, a double pulse test platform is used to validate the effectiveness of estimation method. The estimation curves of turn-off collector voltage are in accordance with the experimental results.
Original languageEnglish
Title of host publicationProceedings of IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), 2016
Number of pages6
PublisherIEEE Press
Publication dateMay 2016
Pages3670 - 3675
ISBN (Electronic)978-1-5090-1210-7
DOIs
Publication statusPublished - May 2016
Event2016 8th International Power Electronics and Motion Control Conference - ECCE Asia (IPEMC 2016-ECCE Asia) - Hefei, China
Duration: 22 May 201625 May 2016

Conference

Conference2016 8th International Power Electronics and Motion Control Conference - ECCE Asia (IPEMC 2016-ECCE Asia)
Country/TerritoryChina
CityHefei
Period22/05/201625/05/2016

Keywords

  • Collector voltage estimation
  • High power IGBTs
  • Voltage overshoot
  • Emitter-auxiliary inductor

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