Compact PCB Coil-based Bilateral Inductive Power Relay System Powering Multiple Gate Drivers with Reliable Voltage Isolation

Yao Wang, Shuyan Zhao, Reza Kheirollahi, Hua Zhang, Fei Lu

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

Abstract

Series-connected semiconductor switches in high-voltage applications generally require isolated power supplies for their gate drivers. This paper proposed a compact inductive power relay system to concurrently power multiple gate drivers with reliable voltage isolation. Compared to existing solutions, there are three improvements. First, printed circuit board (PCB) based coils are used to replace the ferrite-based Litz-wire coil, achieving low cost and light weight. Second, all coupled coils are designed in a unipolar geometry, enabling smaller coil dimensions than bipolar coils used in other solutions. Third, all the load units have identical circuit configurations and parameters, achieving good unit consistency. Detailed system design and analysis are provided, and a prototype is implemented with a coil size of 120mm×70mm to power the gate drivers of four series-connected high-voltage thyristor modules. Experimental results show consistent voltages of 18V are achieved in four output channels, validating the effectiveness of the proposed system.

Original languageEnglish (US)
Title of host publication2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages589-593
Number of pages5
ISBN (Electronic)9781665405607
DOIs
StatePublished - 2022
Externally publishedYes
Event2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022 - Anaheim, United States
Duration: Jun 15 2022Jun 17 2022

Publication series

Name2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022

Conference

Conference2022 IEEE Transportation Electrification Conference and Expo, ITEC 2022
Country/TerritoryUnited States
CityAnaheim
Period6/15/226/17/22

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Transportation

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