Metal Object Detection Circuit with Non-overlapped Coils for Wireless EV Chargers

被引：0

作者：

Jang, Gi C. ^{[1
]}

Jeong, Seog Y. ^{[1
]}

Kwaki, Hyeong G. ^{[1
]}

Rim, Chun T. ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Nucl & Quantum Engn, Daejeon, South Korea

来源：

2016 IEEE 2ND ANNUAL SOUTHERN POWER ELECTRONICS CONFERENCE (SPEC) | 2016年

关键词：

Wireless power transfer; Wireless charging; Foreign object detection; Metal object detection; Stationary EV; POWER TRANSFER;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In the inductive power transfer (IPT) system operation, overheating of metal objects caused by eddy current may cause ignition, resulting in fire or damages to the equipment. Therefore, a metal object detection (MOD) circuit with non-overlapped coils to ensure safe operation of a wireless EV chargers is proposed in this paper. The proposed MOD circuit is composed of a variable resistor, a low pass filter, and a precision rectifier with amplification for accurate data acquisition. Influence of metal object under alternating magnetic field is described with respect to various thickness and types of metal objects. The proposed MOD circuit was experimentally verified using three non-overlapped coils and a 4cm x 4cm metal object, where its output voltage was changed from 200 mV to 1V. The MOD circuit can detect multiple metal objects at the same time and is suitable for high power wireless EV chargers.

引用

页数：6

共 15 条

[1]

[Anonymous], IET Hybrid and Electric Vehicles Conference 2013 (HEVC 2013), DOI DOI 10.1049/CP.2013.1904

[2] Advances in Wireless Power Transfer Systems for Roadway-Powered Electric Vehicles [J].

Choi, Su Y. ;

Gu, Beom W. ;

Jeong, Seog Y. ;

Rim, Chun T. .

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, 2015, 3 (01) :18-36

[3] Asymmetric Coil Sets for Wireless Stationary EV Chargers With Large Lateral Tolerance by Dominant Field Analysis [J].

Choi, Su Y. ;

Huh, Jin ;

Lee, Woo Y. ;

Rim, Chun T. .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2014, 29 (12) :6406-6420

[4] Generalized Active EMF Cancel Methods for Wireless Electric Vehicles [J].

Choi, Su Y. ;

Gu, Beom W. ;

Lee, Sung W. ;

Lee, Woo Y. ;

Huh, Jin ;

Rim, Chun T. .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2014, 29 (11) :5770-5783

[5] Modern Trends in Inductive Power Transfer for Transportation Applications [J].

Covic, Grant Anthony ;

Boys, John Talbot .

IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS, 2013, 1 (01) :28-41

[6]

Ferri M, 2009, EUROP RADAR CONF, P437

[7]

Fukuda S., 2012, 2012 IEEE MTT-S International Microwave Workshop Series on Innovative Wireless Power Transmission: Technologies, Systems, and Applications (IMWS 2012), P241, DOI 10.1109/IMWS.2012.6215802

[8]

Kudo H., 2011, P 2011 IEEE 33 INT T, P1, DOI DOI 10.1109/INTLEC.2011.6099728

[9]

Kuyvenhoven N., 2011, 2011 IEEE S PROD COM, P1, DOI DOI 10.1109/PSES.2011.6088250

[10]

Li HF, 2014, 2014 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION (IEEE ICMA 2014), P481, DOI 10.1109/ICMA.2014.6885745

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