A 20 kW High Power Density Isolated DC-DC Converter for an On-board Battery Charger utilizing Very-low Inductive SiC Power Modules

Rakesh Ramachandran, Jesper Nielsen, Morten Nymand, Nils Nageler, Ronald Eisele

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The design and development of a 20 kW high power density isolated dc-dc converter for an on-board battery charger is presented in this paper. The utilization of low inductive SiC power modules along with compact, low profile magnetics helps in achieving a very high power density for the 20 kW isolated dc-dc converter. The switching frequency of the converter is selected as 100 kHz. The efficiency of the 20 kW, 100 kHz isolated dc-dc converter using SiC power module is estimated above 98% over a wide range of output power. The challenges in the design of a low-inductive SiC power module is also discussed in this paper. Furthermore, the design and analysis of low profile, high efficiency magnetics is discussed along with the experimental verification of the results. The proposed 20 kW converter has a power density of 13.3 kW/L excluding the heatsink.

Original languageEnglish
Title of host publicationAPEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherIEEE
Publication date2020
Pages3503-3507
Article number9124200
ISBN (Print)978-1-7281-4830-4
ISBN (Electronic)9781728148298, 978-1-7281-4828-1
DOIs
Publication statusPublished - 2020
Event35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 - New Orleans, United States
Duration: 15. Mar 202019. Mar 2020

Conference

Conference35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
Country/TerritoryUnited States
CityNew Orleans
Period15/03/202019/03/2020
SponsorIEEE Power Electronics Society, IEEE Industry Applications Society, Power Sources Manufacturers Association (PSMA)

Keywords

  • high efficiency
  • isolated dc-dc converter
  • magnetics
  • Silicon Carbide
  • synchronous rectification
  • wide band gap devices

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