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".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Le transfert d'énergie sans fil (WPT) via des résonances magnétiques couplées a plus de dix ans d'histoire de développement. Cependant, il apparaît un phénomène de division de fréquence dans la région surcouplée, ainsi, la puissance de sortie du système WPT à deux bobines atteint la puissance de sortie maximale aux deux fréquences angulaires de division et non à la fréquence angulaire de résonance naturelle. En étudiant la relation entre les impédances du côté émetteur et du côté récepteur, nous avons découvert que le système TESF est un système de superposition de puissance, et les raisons ont été données pour expliquer comment apparaît la division de fréquence et son impact sur la puissance de sortie maximale du système dans détails. Tout d’abord, le modèle de circuit a été établi et les caractéristiques de transfert du système TESF à deux bobines ont été étudiées en utilisant les théories des circuits. Deuxièmement, le mécanisme de superposition de puissance du système WPT a fait l’objet de recherches approfondies. Troisièmement, la relation entre les impédances du côté émetteur et du côté récepteur a été obtenue en étudiant les caractéristiques d'impédance d'un système TESF à deux bobines, et les facteurs d'impact de la puissance de sortie maximale du système ont également été obtenus en utilisant un mécanisme de superposition de puissance. . Enfin, le circuit expérimental a été conçu et les résultats expérimentaux sont bien cohérents avec l'analyse théorique.
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},}
Copier
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 -