A Fast and General Method to Calculate Mutual Inductance for EV Dynamic Wireless Charging System

Song, Biao; Cui, Shumei; Li, Yong; Zhu, Chunbo

doi:10.1109/tpel.2020.3015100

Cited by 27 publications

(16 citation statements)

References 32 publications

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“…Wireless power transfer (WPT) is widely studied due to its noncontact energy transfer approach, which is successfully used in commercial applications such as electronic devices, electric vehicles, wireless sensors, and medical devices 1 . The mutual inductance M between the coils is considered an important parameter to improve the WPT performance and increase the power, efficiency, and gain 2–4 . The relative position change between the coils has a critical effect on M. The coils in the current studies of WPT are mostly placed parallel to each other.…”

Section: Introductionmentioning

confidence: 99%

“…1 The mutual inductance M between the coils is considered an important parameter to improve the WPT performance and increase the power, efficiency, and gain. [2][3][4] The relative position change between the coils has a critical effect on M. The coils in the current studies of WPT are mostly placed parallel to each other. But in some occasions, influenced by factors such as spatial location 5-7 or conversion efficiency, 8,9 some scholars have studied the mutually perpendicular…”

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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%

mentioning

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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“…Although the employment of WPT to power LEDs is still uncommon, several papers exploring the effects of resonant coupling on the efficiency of wireless charging of EVs can be found in the literature. [10][11][12] For example, Tavakoli et al 13 have reported the possibility of using additives in the mortar to increase the power transfer efficiency in the wireless charging process of EVs. In the cited publication, the authors described the development of a solution that replaces commonly used ferrite tiles with magnetite aggregates disperses on concrete substrates.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modified mortar for wireless powered lighting systems

Esteves

Silva

Fonseca

et al. 2022

Structural Concrete

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A lighting system embedded in a mortar structure powered by an inductive system is described. Different additives with high magnetic permeability were tested to increase power transference efficiency. The best results were obtained using natural magnetite, therefore the impact of different natural magnetite concentrations on the mortar mechanical and electromagnetic properties was investigated. The best results were achieved for samples with 75 wt.% of magnetite. With this composition, three proofs‐of‐concept were fabricated to show the potential of the technology.

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“…The near-field WPT technology has the advantages of safety, reliability, and convenience [3,4], which can be used in different applications. For example, there are wireless charging solutions for electric vehicles (EVs) [5][6][7], drones [8,9], and implanted biomedical devices [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Constant-Current and Constant-Voltage Output for Single-Switch WPT System with Composite Shielding Structure

Zhang

Wang

Yang

et al. 2021

WEVJ

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With the development of wireless power transfer (WPT), the wireless charging has become a research hotspot. This paper proposes a novel single-switch hybrid compensation topology, which can change the compensation network to realize the constant-current (CC) and constant-voltage (CV) output. The zero voltage switching (ZVS) margin can be designed to increase the stability of the system. In addition, the magnetic coupler adopts a composite shielding structure composed of ferrite, nanocrystalline, and aluminium foil. The composite shielding structure has a better shielding effect on magnetic flux leakage, and its weight is lighter. The composite shielding structure is expected to be used in the wireless charging system of electric vehicles (EVs). Finally, an experimental prototype is built to verify the theoretical analysis, and the maximum efficiency can reach 91.4%.

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A Fast and General Method to Calculate Mutual Inductance for EV Dynamic Wireless Charging System

Cited by 27 publications

References 32 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

Modified mortar for wireless powered lighting systems

Constant-Current and Constant-Voltage Output for Single-Switch WPT System with Composite Shielding Structure

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