Optimal Design of Coupling Coils for Wireless Power Transfer System Featuring High Misalignment Tolerance

Zhang, Yukuo; Zhang, Naming; Pan, Gaoyang; Yang, Bin; Shi, Zhou; Wang, Shuhong

doi:10.1007/978-981-19-1528-4_1

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…In order to solve the problem, a method for integrating a reversed-polarity concentric compensating inductor based on the LCC topology was proposed from the perspective of shared flux in Ref. [7]. The coil misalignment of WPT system is inevitable, which can cause the system parameters changes, and the transmission performance will also decrease.…”

Section: Introductionmentioning

confidence: 99%

Study on the Coil Position Adaptive Adjustment Control Scheme of Wireless Power Transfer System

Gao,

Wang,

Tian

et al. 2024

IEEJ Transactions Elec Engng

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Wireless power transfer (WPT) technology can completely isolate the equipment from the power supply, and has been widely used. However, the transmission efficiency of WPT system is optimal only as the transmitting coil was completely aligned with the receiving coil. But in practical applications, the mobile devices are all dynamic system, and perfectly alignment of the coils is a very demanding condition. In order to solve this problem, the paper proposed a coil position adaptive adjustment control scheme of WPT system with lateral misalignment or angular misalignment. Firstly, the relationship between transmission efficiency and lateral misalignment and angular misalignment was analyzed. And the research results show that if there is a lateral misalignment between the coils, the transmission efficiency can be optimized by adjusting the angular misalignment. Secondly, based on the hill climbing algorithm, a coil position adaptive adjustment control method was proposed. Finally, a coil position adaptive adjustment WPT system experimental platform was built, and the experimental researches are carried on. The results of the experiment show that as the transfer distance is 0.10 m and the lateral misalignment is 0.12 m, the transfer efficiency can be increased from 38.38% to 55.61% through the proposed control scheme. And the results verify the feasibility and effectiveness of control scheme proposed in the paper. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

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Section: Introductionmentioning

confidence: 99%

Study on the Coil Position Adaptive Adjustment Control Scheme of Wireless Power Transfer System

Gao,

Wang,

Tian

et al. 2024

IEEJ Transactions Elec Engng

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show abstract

“…In recent years, magnetic coupling resonant WPT technology has received much attention from scholars and industry [1][2][3][4]. A WPT system has a high level of security, high space availability, nonabrasiveness, etc.…”

Section: Introductionmentioning

confidence: 99%

Study of a Double-layer Passive Magnetic Shielding System for Electric Vehicle WPT

Zhang,

Ren,

Kong

et al. 2023

PIER C

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In the wireless power transfer (WPT) system of electric vehicles, the magnetic shielding performance often comes at the expense of the transmission efficiency. How to maintain high transmission efficiency while reducing magnetic leakage is a challenge. For this reason, this paper proposes a double-layer passive magnetic shielding coil structure for an electric vehicle WPT system. First, a leakage optimization method is given, and the optimal parameters for each shielding coil are obtained with this method. Second, according to the obtained coil parameters, a WPT system with magnetic shielding for electric vehicles is developed. The correctness of the proposed structure and method is verified by simulation and experiment. Finally, when the system output is 4 kW, the proposed shielding structure not only reduces the maximum leakage field in the target area by 54.64%, but also has a transmission efficiency of 94.8%.

show abstract

Optimal Design of Coupling Coils for Wireless Power Transfer System Featuring High Misalignment Tolerance

Cited by 2 publications

References 9 publications

Study on the Coil Position Adaptive Adjustment Control Scheme of Wireless Power Transfer System

Study on the Coil Position Adaptive Adjustment Control Scheme of Wireless Power Transfer System

Study of a Double-layer Passive Magnetic Shielding System for Electric Vehicle WPT

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