The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
A transferência de energia sem fio (WPT) por meio de ressonâncias magnéticas acopladas tem mais de dez anos de história de desenvolvimento. No entanto, aparece um fenômeno de divisão de frequência na região sobreacoplada, assim, a potência de saída do sistema WPT de duas bobinas atinge a potência máxima de saída nas duas frequências angulares de divisão e não na frequência angular ressonante natural. Ao investigar a relação entre as impedâncias do lado do transmissor e do lado do receptor, descobrimos que o sistema WPT é um sistema de superposição de potência, e as razões foram dadas para explicar como aparece a divisão de frequência e o impacto na potência máxima de saída do sistema em detalhes. Primeiro, o modelo de circuito foi estabelecido e as características de transferência do sistema WPT de duas bobinas foram estudadas utilizando teorias de circuitos. Em segundo lugar, o mecanismo de superposição de potência do sistema WPT foi cuidadosamente pesquisado. Terceiro, a relação entre as impedâncias do lado do transmissor e do lado do receptor foi obtida investigando as características de impedância de um sistema WPT de duas bobinas, e também os fatores de impacto da potência máxima de saída do sistema foram obtidos usando um mecanismo de superposição de potência . Finalmente, o circuito experimental foi projetado e os resultados experimentais são consistentes com a análise teórica.
Suqi LIU
Central South University
Jianping TAN
Central South University
Xue WEN
Central South University
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Suqi LIU, Jianping TAN, Xue WEN, "Research on the Impedance Characteristic of a Two-Coil Wireless Power Transfer System" in IEICE TRANSACTIONS on Electronics,
vol. E101-C, no. 9, pp. 711-717, September 2018, doi: 10.1587/transele.E101.C.711.
Abstract: Wireless power transfer (WPT) via coupled magnetic resonances has more than ten years history of development. However, it appears frequency splitting phenomenon in the over-coupled region, thus, the output power of the two-coil WPT system achieves the maximum output power at the two splitting angular frequencies and not at the natural resonant angular frequency. By investigating the relationship between the impedances of the transmitter side and receiver side, we found that WPT system is a power superposition system, and the reasons were given to explaining how to appear the frequency splitting and impact on the maximum output power of the system in details. First, the circuit model was established and transfer characteristics of the two-coil WPT system were studied by utilizing circuit theories. Second, the mechanism of the power superposition of the WPT system was carefully researched. Third, the relationship between the impedances of the transmitter side and receiver side was obtained by investigating the impedance characteristics of a two-coil WPT system, and also the impact factors of the maximum output power of the system were obtained by using a power superposition mechanism. Finally, the experimental circuit was designed and experimental results are well consistent with the theoretical analysis.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E101.C.711/_p
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@ARTICLE{e101-c_9_711,
author={Suqi LIU, Jianping TAN, Xue WEN, },
journal={IEICE TRANSACTIONS on Electronics},
title={Research on the Impedance Characteristic of a Two-Coil Wireless Power Transfer System},
year={2018},
volume={E101-C},
number={9},
pages={711-717},
abstract={Wireless power transfer (WPT) via coupled magnetic resonances has more than ten years history of development. However, it appears frequency splitting phenomenon in the over-coupled region, thus, the output power of the two-coil WPT system achieves the maximum output power at the two splitting angular frequencies and not at the natural resonant angular frequency. By investigating the relationship between the impedances of the transmitter side and receiver side, we found that WPT system is a power superposition system, and the reasons were given to explaining how to appear the frequency splitting and impact on the maximum output power of the system in details. First, the circuit model was established and transfer characteristics of the two-coil WPT system were studied by utilizing circuit theories. Second, the mechanism of the power superposition of the WPT system was carefully researched. Third, the relationship between the impedances of the transmitter side and receiver side was obtained by investigating the impedance characteristics of a two-coil WPT system, and also the impact factors of the maximum output power of the system were obtained by using a power superposition mechanism. Finally, the experimental circuit was designed and experimental results are well consistent with the theoretical analysis.},
keywords={},
doi={10.1587/transele.E101.C.711},
ISSN={1745-1353},
month={September},}
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TY - JOUR
TI - Research on the Impedance Characteristic of a Two-Coil Wireless Power Transfer System
T2 - IEICE TRANSACTIONS on Electronics
SP - 711
EP - 717
AU - Suqi LIU
AU - Jianping TAN
AU - Xue WEN
PY - 2018
DO - 10.1587/transele.E101.C.711
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E101-C
IS - 9
JA - IEICE TRANSACTIONS on Electronics
Y1 - September 2018
AB - Wireless power transfer (WPT) via coupled magnetic resonances has more than ten years history of development. However, it appears frequency splitting phenomenon in the over-coupled region, thus, the output power of the two-coil WPT system achieves the maximum output power at the two splitting angular frequencies and not at the natural resonant angular frequency. By investigating the relationship between the impedances of the transmitter side and receiver side, we found that WPT system is a power superposition system, and the reasons were given to explaining how to appear the frequency splitting and impact on the maximum output power of the system in details. First, the circuit model was established and transfer characteristics of the two-coil WPT system were studied by utilizing circuit theories. Second, the mechanism of the power superposition of the WPT system was carefully researched. Third, the relationship between the impedances of the transmitter side and receiver side was obtained by investigating the impedance characteristics of a two-coil WPT system, and also the impact factors of the maximum output power of the system were obtained by using a power superposition mechanism. Finally, the experimental circuit was designed and experimental results are well consistent with the theoretical analysis.
ER -