Magnetic-Field-Model and Circuit-Model Based Analysis of Three-Phase Magnetically Coupled Resonant Wireless Power Transfer Systems with Cylinder-Shaped Coils

Xuling Chen; Xiewei Fu; Chong Jiang; Cunhui Pei; Fuxin Liu

Magnetic-Field-Model and Circuit-Model Based Analysis of Three-Phase Magnetically Coupled Resonant Wireless Power Transfer Systems with Cylinder-Shaped Coils

Vol. 18, No. 4, pp. 1154-1164, Jul. 2018

10.6113/JPE.2018.18.4.1154

Magnetically coupled resonant

Modelling

three-phase

wireless power transfer

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Abstract

In single-phase magnetically coupled resonant (MCR) wireless power transfer (WPT) systems, the transfer characteristics, including the output power and transfer efficiency, are significantly influenced by the spatial scales of its coils. As a potential alternative, a three-phase MCR WPT system with cylinder-shaped coils that are excited in a voltage-fed manner has been proposed to satisfy the requirements of compact space. This system adopts a phase-shifted angle control scheme to generate a rotating magnetic field and to realize omnidirectional WPT that is immune to spatial scales. The magnetic field model and equivalent circuit models are built to holistically analyze the system characteristics under different angular misalignments. Research results show that the transfer characteristics can be improved by modulating the phase-shifted angle in each phase. Experiments have also been carried out to evaluate the accuracy of the theoretical analysis and to confirm the validity of the system modeling method.

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Cite this article

[IEEE Style]

X. Chen, X. Fu, C. Jiang, C. Pei, F. Liu, "Magnetic-Field-Model and Circuit-Model Based Analysis of Three-Phase Magnetically Coupled Resonant Wireless Power Transfer Systems with Cylinder-Shaped Coils," Journal of Power Electronics, vol. 18, no. 4, pp. 1154-1164, 2018. DOI: 10.6113/JPE.2018.18.4.1154.

[ACM Style]

Xuling Chen, Xiewei Fu, Chong Jiang, Cunhui Pei, and Fuxin Liu. 2018. Magnetic-Field-Model and Circuit-Model Based Analysis of Three-Phase Magnetically Coupled Resonant Wireless Power Transfer Systems with Cylinder-Shaped Coils. Journal of Power Electronics, 18, 4, (2018), 1154-1164. DOI: 10.6113/JPE.2018.18.4.1154.