Electromagnetic Shielding Design for 200 kW Stationary Wireless Charging of Light-Duty EV
| Autor: | Omer C. Onar, Veda P. Galigekere, Bo Zhang, Richard Barney Carlson, Jason Pries |
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| Rok vydání: | 2020 |
| Předmět: |
Electromagnetic field
business.product_category Materials science business.industry 05 social sciences 020207 software engineering 02 engineering and technology Automotive engineering Electromagnetic coil Electromagnetic shielding Electric vehicle 0202 electrical engineering electronic engineering information engineering Ferrite (magnet) Wireless 0501 psychology and cognitive sciences Wireless power transfer business 050107 human factors Leakage (electronics) |
| Zdroj: | 2020 IEEE Energy Conversion Congress and Exposition (ECCE). |
| DOI: | 10.1109/ecce44975.2020.9235329 |
| Popis: | Wireless power transfer (WPT) is a developing technology with the advantage of convenience and flexible charging. SAE recommended practice J2954 defines typical size and geometry with aluminum or ferrite plate shielding to limit leakage electromagnetic (EM) fields for WPT with power levels lower than 22 kVA from the input side. However, as the WPT power goes up to 100- or 200-kW level, EM safety surrounding the WPT becomes a critical concern. To address this oncoming safety challenge, a novel ferrite shielding design is proposed in this paper. Different misalignment scenarios in accordance with definitions in SAE J2954 are also taken into consideration to ensure EM safety under various operation scenarios. Simulation results, which are preliminarily verified by magnetic field measurements at 1.1 m from the center of the vehicle side coil under 100 kW operation, indicate that the magnetic field leakage can be maintained below the limits defined in SAE J2954 for 200 kW operation. A 3.3 kW scale-down test was also carried out and compared to parallel scale-down simulations. 26.8% field emission reduction is observed from the scale-down test, which supports the effectiveness of the proposed shielding design. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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