Mutual inductance calculation of circular coils arbitrary positioned with magnetic tiles for wireless power transfer system

Li, Zhongqi; Zhang, Min

doi:10.1049/iet-pel.2020.0392

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…Mutual inductance between circular spiral coils in near‐field WPT systems has also been investigated, with the expressions proposed for the mutual inductance of the coils considering the helicity 25,26 . Additionally, the enhancement of mutual inductance between circular coils by magnetic cores has been studied in previous studies 27–30 . For mutual inductance calculations between perpendicular rectangular coils, analytical and semi‐analytical methods are commonly used.…”

Section: Introductionmentioning

confidence: 99%

“…25,26 Additionally, the enhancement of mutual inductance between circular coils by magnetic cores has been studied in previous studies. [27][28][29][30] For mutual inductance calculations between perpendicular rectangular coils, analytical and semi-analytical methods are commonly used. For example, Kushwaha et al 31 proposed a three-dimensional analytical model of rectangular coils based on Fourier analysis and magnetic vectors that can calculate mutual inductance between coils with and without shielding.…”

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confidence: 99%

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A novel method for calculating the mutual inductance between two perpendicular coils in wireless power transfer

Feng

2023

Circuit Theory & Apps

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SummaryThe perpendicular coil is increasingly applied in some wireless power transfer (WPT) systems where space position is limited. The existing method of calculating the mutual inductance between perpendicular coils is mainly applied to rectangular and circular coils. However, the practical rectangular coil often has rounded corners, so it unavoidably introduces systematic errors. Concerning this issue, this paper proposed an analytical method to calculate the mutual inductance between mutually perpendicular round‐corner rectangular (RCR) coils. The proposed method is based on a second‐order vector potential (SOVP) model where the mutual inductance between the coils is described as a double integral formula. In this formula, a novel shape and position function is introduced. This shape and position function describes not only RCR coils but also rectangular (including square), circular, and runway ones. A series of experiments were used to validate the proposed method. According to the consistency validation, the proposed method can be more generalized for calculating the mutual inductance of rectangular and circular coils. Through experimental comparison, the proposed method computes the mutual inductance between the perpendicular coil in excellent agreement with the measured ones. Therefore, the proposed method unifies the mutual inductance calculation of mutually perpendicular circular, rectangular (square), runway, and RCR coils and can provide an important basis for designing WPT systems using the above coils.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

A novel method for calculating the mutual inductance between two perpendicular coils in wireless power transfer

Feng

2023

Circuit Theory & Apps

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“…The mutual inductance of coils with magnetic cores or shielding has been considered in Refs. [12][13][14][15]. More works are dedicated to the mutual inductance calculation for the air core coils.…”

Section: Introductionmentioning

confidence: 99%

Mutual inductance calculation for rectangular and circular coils with parallel axes

Yu,

Chen,

Luo

et al. 2023

IET Electric Power Appl

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Simple and practical methods have been provided for the mutual inductance between rectangular and circular coils with parallel axes. The 2D Integral solution is given for the coils without the axial overlap. To improve the efficacy of the proposed approach for the partial or full axial overlap, the series solution derived by the truncated region eigenfunction expansion (TREE) is provided. Both integral and TREE expressions show very high accuracy through comparison with the finite element method simulation and experiment results. Numerical comparisons reveal that the TREE solution is the most efficient while keeping sufficient accuracy, and it is also applicable to all sorts of coil positions.

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“…Xie Yue [12] deduced a theoretical calculation formula for mutual inductance between a single-turn coil with rectangular sections at arbitrary relative spatial positions. Li Zhongqi [13] provided a complete solution for arbitrary position calculation with high accuracy.…”

Section: Introductionmentioning

confidence: 99%

Mutual Inductance Calculation of Circular Coils Sandwiched between 3-Layer Magnetic Mediums for Wireless Power Transfer Systems

Yang

Zhang

et al. 2021

Electronics

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The mutual inductance between coils directly affects many aspects of performance in wireless power transmission systems. Therefore, a reliable calculation method for the mutual inductance between coils is of great significance to the optimal design of transmission coil structures. In this paper, a mutual inductance calculation for circular coils sandwiched between 3-layer magnetic mediums in a wireless power transmission system is proposed. First, the structure of circular coils sandwiched between 3-layer magnetic mediums is presented, and then a mutual inductance model of the circular coils is established. Accordingly, a corresponding magnetic vector potential analysis method is proposed based on Maxwell equations and the Bessel transform. Finally, the mutual inductance calculation method for circular coils between 3-layer magnetic mediums is obtained. The correctness of the proposed mutual inductance calculation method is verified by comparing the calculated, simulated, and measured mutual inductance data.

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Mutual inductance calculation of circular coils arbitrary positioned with magnetic tiles for wireless power transfer system

Cited by 6 publications

References 21 publications

A novel method for calculating the mutual inductance between two perpendicular coils in wireless power transfer

A novel method for calculating the mutual inductance between two perpendicular coils in wireless power transfer

Mutual inductance calculation for rectangular and circular coils with parallel axes

Mutual Inductance Calculation of Circular Coils Sandwiched between 3-Layer Magnetic Mediums for Wireless Power Transfer Systems

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