On-Line Foreign Object Detection Using Double DD Coils in an Inductive Wireless Power Transfer System

Prosen, Nataša; Milanovič, M.; Domajnko, Jure

doi:10.3390/s22041637

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…The suggested approach has the potential to transform the charging of electric vehicles by providing a more convenient and efficient technique. Furthermore, Prosen et al, [118] work "On-Line Foreign Object Detection Using Double DD Coils in an Inductive Wireless Power Transfer System" describes a technique for identifying foreign objects using double DD coils in an inductive wireless power transmission method. The paper proposes using double DD coils to detect foreign objects in the system.…”

Section: Next a Study Titled "Improved Transfer Efficiency Of Wireles...mentioning

confidence: 99%

A Comparative Review on Acoustic and Inductive Power Transfer

Muhammad Izzul Syafiq Faiz,

Md Rabiul Awal,

Md Rubel Basar

et al. 2024

ARASET

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Wireless Power Transmission (WPT) has emerged as a prominent player in numerous industries recently. It is already established in wireless charging for electric cars and electronic gadgets. However, it has promising applications in medical implants and imaging as well. Among several proposals, Inductive Power Transfer (IPT) and Acoustic Power Transfer (APT) have shown a major impact on this area of interest. This paper presents a comparison between IPT and APT for wireless power transmission (WPT). Most recent proposals are reported, and several key parameters are considered to evaluate the proposals. That includes operating frequencies, separations gaps, powers and power transmission efficiencies and experimental validity. It is found from the review that; a maximum 818 kW of power is transmitted using IPT for electric vehicles. However, APT can transmit 1.068 kW and 5.4 W through wall and in-body medium (implants). Over 90% efficiencies are found for both APT and IPT. In fact, power transfer with 95.66% efficiency over a 6 cm distance of 23.4 W is achieved for APT and 95.6% with 20 cm separation gaps is achieved for IPT for 20 kW power. A wide range of frequencies are applied for both APT and IPT. However, lower frequencies are mostly suitable for high power, more specifically less than MHz ranges. Naturally, lower frequencies are preferable for low power high efficiencies.

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Section: Next a Study Titled "Improved Transfer Efficiency Of Wireles...mentioning

confidence: 99%

A Comparative Review on Acoustic and Inductive Power Transfer

Muhammad Izzul Syafiq Faiz,

Md Rabiul Awal,

Md Rubel Basar

et al. 2024

ARASET

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Electric vehicle wireless charging system for the foreign object detection with the inducted coil with magnetic field variation

Alshammari,

Chabaan

2023

Nonlinear Engineering

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Foreign object detection is one of the most critical issues in electric vehicle wireless charging systems. This article proposes a foreign object detection scheme with an induced coil in the charging system. The proposed method uses a multifunctional tunneling resistance sensor matrix to detect the presence of a foreign metal object between the coils. An asymmetrical induction coil design scheme is proposed to eliminate the blind area. The suggested method utilizes size-modulated c-shaped coil units to remove invisible zones that result from the magnetic field’s axial uniformity. The induced voltage in the transmission coil is measured using ANSYS/MAXWELL software. The experimental results show that the suggested method has a number of benefits over regular even-sensing coils, including higher uniformity in the induced current, position-dependent detection sensitivity, and detection accuracy. It provides a feasible and affordable way to get around the drawbacks of the traditional detecting coil.

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On-Line Foreign Object Detection Using Double DD Coils in an Inductive Wireless Power Transfer System

Prosen

Milanovič

Domajnko

2022

Sensors

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This paper proposes an on-line method for foreign object detection in a double DD coil system. The foreign object is detected by real-time measurement of the mutual inductance between the transfer pads. Measurement of the mutual inductance between coils can be performed at the start, during initialisation, or during the wireless power transfer. The coils in the double DD coil structure can be used separately; one coil can be used for power transfer and the other can be used for the mutual inductance measurement. The mutual inductance measurement is based on the voltage measurement across the open circuit receiver coil. The measured value of mutual inductance between the transmitter and the receiver pad can be used in a control algorithm and in a foreign object detection algorithm. Additionally, a 2DDq coil structure can be used as a replacement for the double DD coil structure, which increases the power transfer density. The DD coils in the double DD coil structure can also be driven using two phase-shifted voltages, which enables better location and detection of foreign objects. The method also helps to differentiate the mutual inductance change due to the distance change from the mutual inductance change due to the presence of a foreign object.

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On-Line Foreign Object Detection Using Double DD Coils in an Inductive Wireless Power Transfer System

Cited by 3 publications

References 21 publications

A Comparative Review on Acoustic and Inductive Power Transfer

A Comparative Review on Acoustic and Inductive Power Transfer

Electric vehicle wireless charging system for the foreign object detection with the inducted coil with magnetic field variation

On-Line Foreign Object Detection Using Double DD Coils in an Inductive Wireless Power Transfer System

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