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A Study on Optimization of Wireless Power Transmission Ferrite-less Coils in the 85 kHz Band by Numerical Analysis

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Available on this site
Format
PDF
Price
Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
Publication code
20214322
Paper/Info type
Other International Conferences

No.D2.1

Pages
1-7(Total 7 p)
Date of publication
May 2021
Publisher
JSAE
Language
English
Event
International Electric Vehicle Technology Conference EVTeC 2021 [Online Meeting]

Detailed Information

Category(E)Wireless Power Transfer II
Author(E)1) Yuto Yamada, 2) Takehiro Imura
Affiliation(E)1) Tokyo University of Science, 2) Tokyo University of Science
Abstract(E)Wireless Power Transfer (WPT) has received a great deal of attention in recent years. Wireless power transfer for Electric Vehicles (EV) is becoming more important as a key factor in the popularization of EVs. Although the efficiency of wireless power transfer by magnetic field resonance can be evaluated by the kQ product, the optimum coil design method that maximizes the kQ product at a specific frequency has not yet been established. In the previous research, it is very troublesome because the electromagnetic field analysis was repeated by trial and error. In this paper, the kQ product is modeled for the number of turns in the Test Stations GA-WPT1 and VA-WPT1/Z3, which are defined in the international standard SAE J2954, and the coil that achieves the maximum efficiency is evaluated in terms of the number of turns. Although some errors in the modeling of the kQ product are expected to occur, a high-efficiency coil design plan is presented with almost no errors in terms of efficiency.

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