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Title: A novel transformer for contactless energy transmission systems
Authors: Zhang, W
Chen, Q
Wong, SC 
Tse, CK 
Ruan, X
Keywords: Contactless transformer
Coupling coefficient
Magnetic reluctance circuit
Issue Date: 2009
Source: 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009, 2009, 5316365, p. 3218-3224 How to cite?
Abstract: Coupling coefficient k of a transformer is a key parameter affecting the efficiency of a contactless energy transmission systems (CETS). Aiming to obtain higher k, smaller size and lighter weight for the contactless transformer, techniques for the improvement of core structure and coil arrangement are proposed in this paper. A new magnetic reluctance circuit is also proposed for the transformer. Based on magnetic flux coupling, magnetic reluctances are found for the calculation of k. A novel contactless transformer is fabricated for a 60W CETS. The k calculated is verified with experimental measurement to be very accurate. A contactless transformer with k of 0.6 and weight of 60g is achieved. Compared with our previous transformer having k of 0.53 and weight of 122g, the new transformer offers about 2.5% improvement in the maximum efficiency.
Description: 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009, San Jose, CA, 20-24 September 2009
ISBN: 9781424428939
DOI: 10.1109/ECCE.2009.5316365
Appears in Collections:Conference Paper

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