A loosely coupled transformer with mixed winding and electromagnetic shielding for contactless power transmission

Jia Hou, Qianhong Chen, Siu Chung Wong, Xiaoyong Ren, Xinbo Ruan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The loosely coupled transformer is the key component of a contactless power transmission (CPT) system. In order to reduce the size of the loosely coupled transformer, mixed winding arrangement containing planar winding and vertical winding is proposed in this paper. However, because of the using of the vertical winding, the proposed transformer has a large part of leakage flux at the back of the core, resulting in low coupling coefficient k of the transformer. An aluminium sheet is attached to the back of the core as electromagnetic shielding to avoid this problem and improve the coupling coefficient. After that, the length of the aluminium sheet is optimised. A loosely coupled transformer with mixed winding and shielding is fabricated in the lab. The optimization of the length of the shielding is verified with experimental measurement to be very accurate. A contactless transformer with k of 0.583 and length of 73 mm is achieved. Compared with the previous transformer having k of 0.523 and length of 90 mm, the proposed transformer offers smaller size and higher k.
Original languageEnglish
Title of host publicationProceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014
PublisherIEEE
Pages588-593
Number of pages6
ISBN (Electronic)9781479967674
DOIs
Publication statusPublished - 9 Feb 2014
Event2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014 - Holiday Inn Shanghai Pudong Kangqiao, Shanghai, China
Duration: 5 Nov 20148 Nov 2014

Conference

Conference2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014
CountryChina
CityShanghai
Period5/11/148/11/14

Keywords

  • Contactless power transmission
  • Electromagnetic shielding
  • Loosely coupled transformer
  • Optimization
  • Winding arrangement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

Cite this