Foreign Object Detection in a Wireless Power Transfer System Using Symmetrical Coil Sets

Xiang, Lijuan; Zhu, Ze; Tian, Jing; Tian, Yong

doi:10.1109/access.2019.2908866

Cited by 88 publications

(42 citation statements)

References 20 publications

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“…The detection method based on a passive induced voltage deviation focuses on the electromagnetic coupling effect of the metal object, where the change in the EMF causes an induced voltage deviation of the additional detection coil [58][59][60][85][86][87][88][89][90][91][92] or the tunable magnetoresistive (TMR) sensor [57]. The equivalent circuit is shown in Figure 10.…”

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

“…The equivalent circuit is shown in Figure 10. In [58][59][60][85][86][87][88][89][90][91][92], the induced voltage deviation of the additional detection coil was always utilized to verify the distorted EMF between the transmission coils in the presence of metal objects. The detection coil was always located on the transmitting pad and contained two reverse direction or symmetric direction coil loops to cancel the induced voltage generated by the transmitting coil.…”

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

“…The detection coil proposed in [58] consisted of many turns of two parallel symmetrical half-circle coils overlapping with reverse directions. The symmetrical configurations of the square coils connected in reverse direction are proposed in [90][91][92], where a double-layer balanced configuration is used in [90], a two-layer centrosymmetric configuration is used in [91], a single layer symmetrical configuration with a non-symmetrical center to eliminate the blind zones is proposed in [92].…”

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

“…Changed electromagnetic field (EMF) [57][58][59][60][85][86][87][88][89][90][91][92] The operating time of the detection methods also needs to be considered. If the detection method can be implemented before charging, the metal object can then be found and removed before the object absorbs energy from the WPT system.…”

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

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Foreign Object Detection for Electric Vehicle Wireless Charging

Xia

Yuan

et al. 2020

Electronics

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Wireless power transfer technology is being widely used in electric vehicle wireless-charging applications, and foreign object detection (FOD) is an important module that is needed to satisfy the transmission and safety requirements. FOD mostly includes two key parts: metal object detection (MOD) and living object detection (LOD), which should be implemented during the charging process. In this paper, equivalent circuit models of a metal object and a living object are proposed, and the FOD methods are reviewed and analyzed within a unified framework based on the proposed FOD models. A comparison of these detection methods and future challenges is also discussed. Based on these analyses, detection methods that employ an additional circuit for detection are recommended for FOD in electric vehicle wireless-charging applications.

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Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

Section: (C) Detection Methods Based On a Passive Induced Voltage Devimentioning

confidence: 99%

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Foreign Object Detection for Electric Vehicle Wireless Charging

Xia

Yuan

et al. 2020

Electronics

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“…The other type of FOD method applies active or passive auxiliary coil sets. The passive coil sets (PCS) measure the induced voltage caused by the magnetic field produced by the eddy current within the MFO [7]- [9]. Thus, this approach requires excitation of the transmitter and zero couplings between the transmitter and the detection coil sets.…”

Section: Introductionmentioning

confidence: 99%

Detection of Metallic Foreign Objects and Electric Vehicles Using Auxiliary Coil Sets for Dynamic Inductive Power Transfer Systems

Shi

Grazian

Dong

et al. 2020

2020 IEEE 29th International Symposium on Industrial Electronics (ISIE)

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This paper proposes a new method of electric vehicles detection (EVD) and foreign objects detection (FOD) for dynamic inductive power transfer (DIPT) systems. The proposed detection method applies both passive coil sets (PCSs) and active coil sets (ACSs) to achieve both EVD and FOD with a high detection sensitivity. The operation mechanisms and design of the detection coil sets topology and resonant circuits are elaborated. Finally, both circuit and magnetic field simulation are carried out. The results verify the feasibility and sensitivity of the proposed detection method.

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WPT for High‐power Application – Electric Vehicles

2022

Wireless Power Transfer: Principles and Applications

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Foreign Object Detection in a Wireless Power Transfer System Using Symmetrical Coil Sets

Cited by 88 publications

References 20 publications

Foreign Object Detection for Electric Vehicle Wireless Charging

Foreign Object Detection for Electric Vehicle Wireless Charging

Detection of Metallic Foreign Objects and Electric Vehicles Using Auxiliary Coil Sets for Dynamic Inductive Power Transfer Systems

WPT for High‐power Application – Electric Vehicles

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