Development of In-Wheel Receiver Coil for Dynamic Wireless Power Transfer

Sakai, Osamu; Utsu, Takashi; Fujimoto, Hiroshi; Gunji, Daisuke; Kuwayama, Isao

doi:10.1541/ieejias.141.388

Cited by 3 publications

(11 citation statements)

References 4 publications

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“…In addition, power is once converted to electricity while transmitted from outside to inside the wheel, which means that conventional aluminum wheels can be used. The structure proposed in this paper offers reduction of coil gap as compared to the previous structure propose in References 15,16 …”

Section: Forewordmentioning

confidence: 91%

“…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 12,15,16 . Particularly, placing receiver coils inside wheels offers realization of DWPT without modifying the structure of existing vehicles.…”

Section: Forewordmentioning

confidence: 99%

“…This section explains about conventional structure, that is, direct power supply to IWC 15,16 . The coil structure is illustrated in Figure 1.…”

Section: Power Supply Systemmentioning

confidence: 99%

“…The circuit configuration is shown in Figure 7, and T equivalent circuit is shown in Figure 8. The circuit configuration considered here is same as in References 15,16 . Power transfer is verified using SS (Series‐Series) scheme in which resonance capacitors are connected in series to coils.…”

Section: Formulation Of Power Transfermentioning

confidence: 99%

“…A fiber‐belt tire and plastic wheel are assumed in the conventional structure; a fiber‐belt tire and aluminum wheel are assumed in the proposed structure. It was shown in Reference 16 that fiber belt and plastic materials used in tire and wheel located between transmitter and receiver coils have only minor influence on inductance and resistance, and do not considerably affect power transfer. Thus, the fiber‐belt tire and plastic wheel were removed when evaluating the conventional structure; as regards evaluation of the proposed structure, the fiber‐belt tire was removed, while the aluminum wheel affecting power transfer was left in place.…”

Section: Experimental Verificationmentioning

confidence: 99%

See 4 more Smart Citations

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: 91%

Section: Forewordmentioning

confidence: 99%

“…This section explains about conventional structure, that is, direct power supply to IWC 15,16 . The coil structure is illustrated in Figure 1.…”

Section: Power Supply Systemmentioning

confidence: 99%

Section: Formulation Of Power Transfermentioning

confidence: 99%

Section: Experimental Verificationmentioning

confidence: 99%