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Title: Comparison of Leakage Magnetic Field from Matched and Mismatched Double-D Coil based Wireless Charging System for Electric Vehicles

Abstract

In this paper, a magnetic shield design is proposed for a matched and mismatched coil based high-power wireless charging system (WCS). The high-power WCS are highly prone to exceed the safety limits of both the electric and magnetic field leakage. The leakage magnetic field from the mismatched pads are higher than the matched pads. In a mismatched system, the receiver is usually made much smaller than the transmitter, which requires higher amp-turns in the coils to transfer the same amount of power. In addition, coupling factor is lower in mismatched systems. Therefore, the electromagnetic field (EMF) emission is higher for a mismatched system, compared to matched system where both the transmitter and receiver are similar and large. This phenomenon applies for both the nonpolarized-circular and DD pads. In this paper, the leakage magnetic field is compared for the matched-DD and mismatched-DD coil-based WCS. The leakage field is evaluated through finite element analysis (FEA) and verified experimentally through an 11 kW mismatched DD system. The results show that, the leakage magnetic field is much higher for a mismatched WCS, compared to a matched WCS.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]
  1. University of Akron
  2. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1569376
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: IEEE Energy Conversion Congress and Exposition (IEEE ECCE 2019) - Baltimore, Maryland, United States of America - 9/29/2019 8:00:00 AM-10/3/2019 8:00:00 AM
Country of Publication:
United States
Language:
English

Citation Formats

Mostak, Mostak Mohammad, Pries, Jason, Onar, Omer, Anwar, Saeed, Galigekere, Veda Prakash, Su, Gui-Jia, and Wilkins, Jon. Comparison of Leakage Magnetic Field from Matched and Mismatched Double-D Coil based Wireless Charging System for Electric Vehicles. United States: N. p., 2019. Web.
Mostak, Mostak Mohammad, Pries, Jason, Onar, Omer, Anwar, Saeed, Galigekere, Veda Prakash, Su, Gui-Jia, & Wilkins, Jon. Comparison of Leakage Magnetic Field from Matched and Mismatched Double-D Coil based Wireless Charging System for Electric Vehicles. United States.
Mostak, Mostak Mohammad, Pries, Jason, Onar, Omer, Anwar, Saeed, Galigekere, Veda Prakash, Su, Gui-Jia, and Wilkins, Jon. Sun . "Comparison of Leakage Magnetic Field from Matched and Mismatched Double-D Coil based Wireless Charging System for Electric Vehicles". United States. https://www.osti.gov/servlets/purl/1569376.
@article{osti_1569376,
title = {Comparison of Leakage Magnetic Field from Matched and Mismatched Double-D Coil based Wireless Charging System for Electric Vehicles},
author = {Mostak, Mostak Mohammad and Pries, Jason and Onar, Omer and Anwar, Saeed and Galigekere, Veda Prakash and Su, Gui-Jia and Wilkins, Jon},
abstractNote = {In this paper, a magnetic shield design is proposed for a matched and mismatched coil based high-power wireless charging system (WCS). The high-power WCS are highly prone to exceed the safety limits of both the electric and magnetic field leakage. The leakage magnetic field from the mismatched pads are higher than the matched pads. In a mismatched system, the receiver is usually made much smaller than the transmitter, which requires higher amp-turns in the coils to transfer the same amount of power. In addition, coupling factor is lower in mismatched systems. Therefore, the electromagnetic field (EMF) emission is higher for a mismatched system, compared to matched system where both the transmitter and receiver are similar and large. This phenomenon applies for both the nonpolarized-circular and DD pads. In this paper, the leakage magnetic field is compared for the matched-DD and mismatched-DD coil-based WCS. The leakage field is evaluated through finite element analysis (FEA) and verified experimentally through an 11 kW mismatched DD system. The results show that, the leakage magnetic field is much higher for a mismatched WCS, compared to a matched WCS.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}

Conference:
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