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Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils

Fábio B. de Moraes et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo · 2021

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Author / responsible party
Fábio B. de Moraes et al
Publisher
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo
Year
2021
ISSN
2179-1074
ISSN
2179-1074
Language
English

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Abstract In this paper, it is demonstrated that the efficiency and ability to transfer power to the load in three-coil wireless power transfer (WPT) systems are always higher than in equivalent four-coil ones. On the other hand, it is shown that there are features attainable in four-coil WPT system that are not in three-coil ones. For instance, in a four-coil WPT system, which can be divided into source, two communication, and load circuits, it is possible to devise a method for which the maximum power transferred to the load circuit or the maximum efficiency do not depend on the mutual inductance between the two communication coils, independently of the load resistance value. The necessary conditions to achieve the above feature together with the overall circuit analysis are discussed in details and practical results presented.

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APA 7

al, F. B. D. M. E. (2021). Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils. https://doi.org/10.1590/2179-10742021v20i1924

MLA

al, Fábio B. de Moraes et. "Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils." 2021. https://doi.org/10.1590/2179-10742021v20i1924.

Chicago

al, Fábio B. de Moraes et. 2021. "Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils.". https://doi.org/10.1590/2179-10742021v20i1924.

Harvard

al, F. B. D. M. E. 2021, Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils, Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo, available at: https://doi.org/10.1590/2179-10742021v20i1924 [Accessed 7 Aug. 2026].

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Title
Comparison Between Three- and Four-coil Wireless Power Transfer Systems with Resonant Coils
Author / contributors
Fábio B. de Moraes et al
Publisher
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo
Publication year
2021
ISSN
2179-1074
ISSN
2179-1074
Language
English

Subjects

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four-coil; power transfer efficiency; three-coil; wireless power transfer systems
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