An Orthogonal Decoupled Transformer Design for Inductive Power Transfer Applications

Zhuhaobo Zhang, Shaoting Zheng, Dehong Xu, Philip T. Krein, Hao Ma

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

Abstract

Inductive power transfer (IPT) technology for electric vehicle charging has been widely researched due to its convenient and flexible features. In this paper, an orthogonal decoupled transformer design is proposed to upgrade system power capacity. Two power transmission paths are integrated spatially and decoupled magnetically. An input-parallel output-series (IPOS) circuit topology is employed and circuit analysis is presented. Soft switching of primary inverters can be achieved throughout the allowed misalignment range. The system design and performance are simulated with a 3D finite element modeling (FEM) tool and experimentally verified on a 4 kW prototype with a 210 mm air gap. Experimental results show that the orthogonal structure transformer has good lateral, vertical and axial misalignment performance. The maximum conversion efficiency of the proposed system is 93.6% at full output power and stays above 91.6% throughout the misalignment range.

Original languageEnglish (US)
Title of host publication2020 IEEE 29th International Symposium on Industrial Electronics, ISIE 2020 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1587-1592
Number of pages6
ISBN (Electronic)9781728156354
DOIs
StatePublished - Jun 2020
Externally publishedYes
Event29th IEEE International Symposium on Industrial Electronics, ISIE 2020 - Delft, Netherlands
Duration: Jun 17 2020Jun 19 2020

Publication series

NameIEEE International Symposium on Industrial Electronics
Volume2020-June

Conference

Conference29th IEEE International Symposium on Industrial Electronics, ISIE 2020
CountryNetherlands
CityDelft
Period6/17/206/19/20

Keywords

  • coupling coefficient
  • Inductive power transfer
  • misalignment tolerance
  • orthogonal decoupled transformer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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