Evaluating Reduction of Greenhouse Gas Emission by Magnetic Resonance Coupled Dynamic Wireless Power Transfer of Electric Vehicles Considered with Vehicle Production

Sakai, Osamu; Nagai, Sakahisa; Fujita, Toshiyuki; Fujimoto, Hiroshi; Gunji, Daisuke; Sumiya, Hayato; Takahashi, Eiji J.; Yamaguchi, Nobuhisa; Tani, Keisuke

doi:10.1541/ieejias.142.736

Cited by 2 publications

(2 citation statements)

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“…Thus, R&D is carried out worldwide on dynamic WPT (DWPT) for contactless power supply to moving vehicles 7–12 . DWPT is supposed not only to improve well‐to‐wheel efficiency even though WPT is less efficient than contact charging, but also to contribute to CO 2 emission reduction in terms of LCA 13,14 …”

Section: Forewordmentioning

confidence: 99%

“…[7][8][9][10][11][12] DWPT is supposed not only to improve wellto-wheel efficiency even though WPT is less efficient than contact charging, but also to contribute to CO 2 emission reduction in terms of LCA. 13,14 In magnetic coupling based DWPT, reduction of coil gap is very useful in terms of radiated emission (leakage magnetic field) and efficiency. Arrangements of receiver coils in vehicle's upright potions and wheels were proposed to reduce coil gap.…”

Section: Forewordmentioning

confidence: 99%

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Novel dynamic wireless power transfer system using in‐tire and in‐wheel repeater coil for battery electric vehicles

Sumiya

Takahashi

Yamaguchi

et al. 2022

Electrical Engineering Japan

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In order to improve the mileage per charge of battery electric vehicles (BEV), dynamic wireless power transfer systems are being developed. There are some problems such as is the wide gap between coils when mounted under the floor of a vehicle, and the effect of foreign objects between coils on power transmission. In-wheel coils, in which the coils are placed inside the wheel, have been proposed as a solution to these problems. However, they a plastic wheel such as CFRP and cannot reduce the gap between coils. In this paper, we propose a coil configuration in which the coils are placed inside the tire and the wheel. This configuration has the advantage of using a conventional aluminum to reduce the gap between coils. The effectiveness of this method is demonstrated via simulations and experiments.

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Section: Forewordmentioning

confidence: 99%