Omni-Directional Inductive Wireless Power Transfer with 3D MID inductors

Sergkei, Kamotesov; Lombard, Philippe; Semet, V.; Allard, Bruno; Moguedet, Mael; Cabrera, Michel

doi:10.1109/wptc45513.2019.9055702

Cited by 3 publications

(2 citation statements)

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“…It is known in [13,14] that the d-q transform of the two orthogonal signals with the phase difference of 90 • can be used as a phase detector. The voltage equation shown in (1) can be transformed into the d-q coordinates using the mutual inductance angle γ as V dq = Z e I dq + jX e I r (11) where…”

Section: Structure Od Proposed Estimatormentioning

confidence: 99%

“…Multi-dimensional WPT systems with additional Tx coils can be considered to overcome this problem [1][2][3][4][5][6][7][8][9][10][11][12], where the magnetic field synthesized using the multiple Tx coils can improve the PTE even under the variation of the distance and alignment. The current control method for the two and three dimensional (2D and 3D) WPT systems was presented in [1].…”

Section: Introductionmentioning

confidence: 99%

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An Improved Estimation Method of Mutual Inductance Angle for a Two-Dimensional Wireless Power Transfer System

Lee

Kwon

et al. 2021

Symmetry

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The improvement of power transmission efficiency (PTE) is an important issue in the design of a wireless power transfer (WPT) system. The WPT system with multiple transmitting (Tx) or receiving (Rx) coils is a way to improve the PTE. This paper deals with the estimation of the mutual inductance angle for a two-dimensional (2D) WPT system with two Tx coils and one Rx coil. The mutual inductance angle is one of the most important parameters to determine the PTE in the 2D WPT system. The condition for the maximum PTE is investigated and the mutual inductance angle is defined for the 2D WPT system. An improved estimation method of the mutual inductance angle is proposed based on the phase-locked loop (PLL) technique using the voltages and currents of the Tx coils. The simulation and experimental results are provided to validate the effectiveness of the proposed method.

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Section: Structure Od Proposed Estimatormentioning

confidence: 99%