Development of Dynamic Wireless Power Transfer System for Vehicle Logistics Robot

Sakai, Osamu; Hanabusa, Kazuyoshi; Arasaki, Kota; Gunji, Daisuke; Sakai, Yuto; Ikeda, Hiromori; Matsuoka, Fuminori

doi:10.1541/ieejias.142.146

Cited by 1 publication

(2 citation statements)

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“…To maximize the efficiency (6), Pt needs to be minimized under the fixed voltage 𝑉 ̇ . For N3, the current condition achieving this can be determined by solving a geometric problem involving the tangent point between a plane represented by (8) and an ellipsoid represented by (7a) in a rectangular coordinate system with 𝐼 ̇ , 𝐼 ̇ and 𝐼 ̇ .…”

Section: 1mentioning

confidence: 99%

“…In recent years, wireless power transfer (WPT) systems have been actively researched as a charger of vehicles such as electric vehicle (EV) (1)- (5) and automated guided vehicle (AGV) (6)- (9) . In the WPT systems, the deterioration in performance caused by misalignments between the transmitter coil and the receiver coil is inevitable issues.…”

Section: Introductionmentioning

confidence: 99%

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Optimal System for a Free-Positioning Wireless Power Transmitter with Coils Arranged in a Square Pattern

Matsumura,

Hata,

Matsumoto

et al. 2024

IEEJ Journal IA

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This study introduces an optimal system combining a circuit configuration and control algorithm for wireless power transmitter with coils arranged in a square pattern. The system uses a four-leg half-bridge inverter to simultaneously feed power to four coils through a switch set. Inductances, including the mutual inductances between the transmitter coils, are eliminated using the reactance devices on the return path in the proposed circuit configuration. The proposed control algorithm enables uniform power transfer at maximum efficiency, independent of the receiver position. The experimental results obtained using a prototype of the transmitter confirm that the system can transfer 500 W with a slight variation of 5.56% and efficiencies more than 80.6%.

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Section: 1mentioning

confidence: 99%