A 4kV/100A SiC MOSFETs-based solid state DC circuit breaker with low stray inductances and powered by a load-independent wireless power transfer system

Zhonghao Dongye, Yao Wang, Hua Zhang, Sheng Zheng, Xiaonan Lu, Fei Lu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

This paper develops a 4kV/100A DC circuit breaker (DCCB) based on discrete SiC MOSFETs. The DCCB adopts a 5-layers tower structure and each layer has ten evenly distributed MOSFETs. The DCCB is powered by a wireless power transfer (WPT) system with multiple outputs and easy to scale. The DCCB we proposed has two main advantages. First, it has very low normally on-state power loss compared to traditional solid state breakers. The on-state efficiency is higher than 99.97%. Second, compared to the previous power supply system for the DCCB, the implemented WPT system has a good load-independent characteristic. The maximum efficiency of this WPT system is 87%, with a total power of 40 W at 200 kHz. Besides, An accurate equivalent model of the DCCB is established by including mutual inductances among different MOSFETs. According to this model, the mutual inductance could count on 40% of the total parasitic inductance.

Original languageEnglish (US)
Title of host publicationECCE 2020 - IEEE Energy Conversion Congress and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1279-1283
Number of pages5
ISBN (Electronic)9781728158266
DOIs
StatePublished - Oct 11 2020
Externally publishedYes
Event12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 - Virtual, Detroit, United States
Duration: Oct 11 2020Oct 15 2020

Publication series

NameECCE 2020 - IEEE Energy Conversion Congress and Exposition

Conference

Conference12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Country/TerritoryUnited States
CityVirtual, Detroit
Period10/11/2010/15/20

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Optimization
  • Energy Engineering and Power Technology

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