Modeling and analysis of current transformer for fast switching power module current measurement

Qian Wu, Kaiyuan Lu, Helong Li

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

1 Citation (Scopus)

Abstract

A current transformer manufactured with silicon steel laminations has been recently introduced and successfully applied to the measurement of current characteristics of fast switching power modules. Its performance competes advantageously with the existing measuring devices due to its high bandwidth, small physical size, simple structure, galvanic isolation for measurement safety, and low cost as well. In order to have a clear understanding of the working principle of this kind of current transformer for power module current measurement, this paper presents detailed theoretical analysis and design guidelines. Additionally, the error analysis related to the influence of the main geometrical parameters on performance will be given. Design suggestions for achieving higher measurement accuracy by optimizing the current transformer geometrical parameters can be concluded. A prototype of current transformer is manufactured and tested for validating the theoretical analysis. The experimental results agree well with the theory developed in this paper.

Original languageEnglish
Title of host publication2016 IEEE 8th International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Number of pages8
PublisherIEEE
Publication date13 Jul 2016
Pages1615-1622
Article number7512535
ISBN (Electronic)9781509012107
DOIs
Publication statusPublished - 13 Jul 2016
Event8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016 - Hefei, China
Duration: 22 May 201626 May 2016

Conference

Conference8th IEEE International Power Electronics and Motion Control Conference, IPEMC-ECCE Asia 2016
Country/TerritoryChina
CityHefei
Period22/05/201626/05/2016

Keywords

  • current transformer
  • measurement error
  • turn number
  • winding configuration
  • working principle

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