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Journal Article Control of WPT Transmitter Coils for Power Distribution to Two Receiver Coils without Feedback
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Authors
허준, 박성열, Kim Sang-Won, Cho In Kui, 홍송남, 박용배
Issue Date
202110
Source
Energies, v.14 no.20, pp.1-11
ISSN
1996-1073
Publisher
MDPI
DOI
https://dx.doi.org/10.3390/en14206828
Project Code
21ZH1100, 연결의 한계를 극복하는 초연결 입체통신 기술 연구, Seung Keun Park
Abstract
This paper proposes the algorithm to control the current ratio of the transmitting (Tx) coils for proper power distribution to the two receiving (Rx) coils in wireless power transfer (WPT) system. The proposed algorithm assumes that each Rx coil appears at different times to consider the situation where multiple users request power transmission as practically as possible. That is, suppose the second Rx coil enters the charging space later than the first Rx coil. When each coil enters the charging space, only the Tx coil is used to obtain the value required for calculation. Using the obtained result, the optimized Tx coil current is calculated by the proposed algorithm and proper power distribution to both Rx coils is achieved. Three Tx coils and two Rx coils are constructed using the ANSYS MAXWELL simulation tool. As a result of applying the proposed algorithm, it was confirmed that a similar level of power was transmitted between 40~60%, respectively. The sum of the power transmitted to the two Rx coils also appeared as more than 75%.
KSP Keywords
ANSYS Maxwell simulation, Coil current, Current ratio, Wireless Power Transfer (WPT) system, multiple users, power Transmission, power distribution, simulation tool
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