Investigation of design methodology of planar transformers for EV on board chargers

Zhengda Zhang, Chunhui Liu, Yunpeng Si, Yifu Liu, Qin Lei, Sheng Ai

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

Abstract

In this paper, a generalized design and optimization methodology is proposed for planar transformers. In stead of applying fancy optimization algorithms which employs numerous free parameters, the proposed methodology utilizes very few geometry-related free variables. As a result, it is easy to find patterns and trade-offs during the optimization process. Followed the proposed methodology, a planar transformer prototype is designed for a 6.6 kW/500 kHz CLLC resonant converter. The CLLC resonant converter serves as the isolated dc/dc stage for EV on board chargers. The CLLC converter is tested at full load condition and the transformer exhibits more than 99.4% efficiency.

Original languageEnglish (US)
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages4139-4145
Number of pages7
ISBN (Electronic)9781728103952
DOIs
StatePublished - Sep 2019
Externally publishedYes
Event11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
Duration: Sep 29 2019Oct 3 2019

Publication series

Name2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
CountryUnited States
CityBaltimore
Period9/29/1910/3/19

Keywords

  • CLLC resonant converter
  • EV on board charger
  • High frequency
  • High power density
  • Optimization
  • Planar transformer
  • WBG devices

ASJC Scopus subject areas

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

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