A Metal Object Detection System with Multilayer Detection Coil Layouts for Electric Vehicle Wireless Charging
| Autor: | Guang Pan, Bo Cheng, Yiming Zhang, Chunting Chris Mi, Rakan Chabaan, Jianghua Lu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Control and Optimization
business.product_category Computer science inductance variation Energy Engineering and Power Technology 02 engineering and technology lcsh:Technology law.invention Printed circuit board law Hardware_GENERAL Electric vehicle 0202 electrical engineering electronic engineering information engineering Eddy current Maximum power transfer theorem inductive power transfer Electrical and Electronic Engineering Engineering (miscellaneous) Electronic circuit multi-layer detection coil metal object detection wireless charging Renewable Energy Sustainability and the Environment business.industry lcsh:T 020208 electrical & electronic engineering Electrical engineering Resonance 020206 networking & telecommunications Object detection Magnetic field Inductance Electromagnetic coil business Energy (miscellaneous) |
| Zdroj: | Energies, Vol 13, Iss 2960, p 2960 (2020) Energies; Volume 13; Issue 11; Pages: 2960 |
| ISSN: | 1996-1073 |
| Popis: | Non-radiative inductive power transfer is one of the most studied and commercially applied wireless charging technologies, where the magnetic field is employed as the medium for power transfer. In the wireless charging of electric vehicles, the strong magnetic field will heat up any metal items falling in the charging area due to eddy current induced in the metal objects, causing hazards like fire. Metal object detection (MOD) is necessary for the market penetration of inductive power transfer technology. This paper aims to improve the performance of systems that detect metal objects based on inductance variations. Two novel multi-layer detection coil layouts are proposed, which can not only cover the entire charging area without blind spots but can also be decoupled from the transmitter and receiver to minimize the influence of the magnetic field that is used for power transfer. Two mixed resonant circuits are proposed and proven to have better performance than parallel and series resonance. The impacts of the detection coil layer, trace width, and turn-number are investigated. The test results indicate that the MOD system can detect one-cent coins at various positions of the detection coil printed circuit board, and can also detect various inductance variations without blind spots in the processing circuit. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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