Symmetric Sensing Coil Design for the Blind-Zone Free Metal Object Detection of a Stationary Wireless Electric Vehicles Charger
| Autor: | Yun-Su Kim, Jun H. Park, Chun T. Rim, Gi C. Jang, Seog Y. Jeong, Van X. Thai |
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| Rok vydání: | 2020 |
| Předmět: |
business.product_category
business.industry Computer science Acoustics 020208 electrical & electronic engineering 02 engineering and technology Object detection Finite element method Magnetic field Metal Electromagnetic coil visual_art Electric vehicle 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium Wireless Electrical and Electronic Engineering business Wireless sensor network |
| Zdroj: | IEEE Transactions on Power Electronics. 35:3466-3477 |
| ISSN: | 1941-0107 0885-8993 |
| Popis: | In this article, a simple and cost-effective symmetric sensing coil set to be used for the metal object detection (MOD) in a stationary wireless electric vehicle charger is newly proposed. Compared to the conventional nonoverlapping sensing coil using the magnetic field change detection method, the proposed symmetric sensing coil set design offers the considerable advantage of eliminating all blind zones, i.e., regions where metal is undetectable in the conventional method. Moreover, by reducing the number of layers to one, the fabrication of the proposed sensing coil is easier and more cost effective. The design of the proposed sensing coil is optimized for highly sensitive MOD based on a sensitivity equation and on the finite element method simulations. An experiment conducted with a metal object 40 × 40 mm2 in size and a 20 A transmitting (Tx) coil current verifies the reliability and the blind-zone elimination feature of the proposed sensing coil. |
| Databáze: | OpenAIRE |
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