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

doi:10.1109/PEAC.2014.7037922

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

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

4 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 language	English
Title of host publication	Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014
Publisher	IEEE
Pages	588-593
Number of pages	6
ISBN (Electronic)	9781479967674
DOIs	https://doi.org/10.1109/PEAC.2014.7037922
Publication status	Published - 9 Feb 2014
Event	2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014 - Holiday Inn Shanghai Pudong Kangqiao, Shanghai, China Duration: 5 Nov 2014 → 8 Nov 2014

Conference

Conference	2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014
Country/Territory	China
City	Shanghai
Period	5/11/14 → 8/11/14

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

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1109/PEAC.2014.7037922

Cite this

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title = "A loosely coupled transformer with mixed winding and electromagnetic shielding for contactless power transmission",

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.",

keywords = "Contactless power transmission, Electromagnetic shielding, Loosely coupled transformer, Optimization, Winding arrangement",

author = "Jia Hou and Qianhong Chen and Wong, {Siu Chung} and Xiaoyong Ren and Xinbo Ruan",

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note = "2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014 ; Conference date: 05-11-2014 Through 08-11-2014",

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Hou, J, Chen, Q, Wong, SC, Ren, X & Ruan, X 2014, A loosely coupled transformer with mixed winding and electromagnetic shielding for contactless power transmission. in Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014., 7037922, IEEE, pp. 588-593, 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014, Shanghai, China, 5/11/14. https://doi.org/10.1109/PEAC.2014.7037922

A loosely coupled transformer with mixed winding and electromagnetic shielding for contactless power transmission. / Hou, Jia; Chen, Qianhong; Wong, Siu Chung et al.
Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014. IEEE, 2014. p. 588-593 7037922.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

TY - GEN

T1 - A loosely coupled transformer with mixed winding and electromagnetic shielding for contactless power transmission

AU - Hou, Jia

AU - Chen, Qianhong

AU - Wong, Siu Chung

AU - Ren, Xiaoyong

AU - Ruan, Xinbo

PY - 2014/2/9

Y1 - 2014/2/9

N2 - 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.

AB - 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.

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KW - Electromagnetic shielding

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KW - Optimization

KW - Winding arrangement

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

Abstract

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

More information

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