Shield Design for 50 kW Three-Phase Wireless Charging System

Mostak Mohammad; Jason L. Pries; Omer C. Onar; Veda P. Galigekere; Gui Jia Su

doi:10.1109/ECCE44975.2020.9236371

Shield Design for 50 kW Three-Phase Wireless Charging System

Mostak Mohammad, Jason L. Pries, Omer C. Onar, Veda P. Galigekere, Gui Jia Su

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

12 Scopus citations

Abstract

In this paper, magnetic field emissions (MFE) from a 50 kW bipolar coil-based three-phase wireless charging system (WCS) is investigated. Then, a shield design is proposed to suppress the MFE below the safety limit identified by the International Commission of Non-Ionized Radiation Protection (ICNIRP) guidelines. Bipolar coil-based three-phase 3 WCSs provide extremely high power-density; therefore, the 3 WCSs are highly promising for high-power fast-wireless-charging of the electric vehicles. For the high-power EV application, it is a critical challenge to design a shield to suppress the MFE below the safety limit. The traditional aluminum shield is found ineffective for the bipolar 3-WCS. The proposed shield is designed with high-permeability magnetic material, i.e. ferrite, nanocrystalline material, etc. The proposed shield is simulated in finite element analysis (FEA) and the FEA results show that the proposed magnetic shield effectively suppresses the magnetic field emission below the ICNIRP limit. The generalized design of the proposed shield can be used for even higher power bipolar coil based WCSs.

Original language	English
Title of host publication	ECCE 2020 - IEEE Energy Conversion Congress and Exposition
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	842-849
Number of pages	8
ISBN (Electronic)	9781728158266
DOIs	https://doi.org/10.1109/ECCE44975.2020.9236371
State	Published - Oct 11 2020
Event	12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020 - Virtual, Detroit, United States Duration: Oct 11 2020 → Oct 15 2020

Publication series

Name	ECCE 2020 - IEEE Energy Conversion Congress and Exposition

Conference

Conference	12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020
Country/Territory	United States
City	Virtual, Detroit
Period	10/11/20 → 10/15/20

Funding

This research used the resources available at the Power Electronics and Electric Machinery Research Center at the National Transportation Research Center, a US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy user facility operated by Oak Ridge National Laboratory (ORNL). The authors would like to thank Dr. Burak Ozpineci (ORNL) and Dr. David Smith (ORNL) for their managerial support and technical guidance and Lee Slezak (DOE) for funding this work and project guidance. This manuscript has been authored by Oak Ridge National Laboratory, operated by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
U.S. Department of Energy
Oak Ridge National Laboratory

Keywords

EMF
Inductive charging
electric vehicle
leakage field
shielding effectiveness.

Access to Document

10.1109/ECCE44975.2020.9236371

Cite this

Mohammad, M., Pries, J. L., Onar, O. C., Galigekere, V. P., & Su, G. J. (2020). Shield Design for 50 kW Three-Phase Wireless Charging System. In ECCE 2020 - IEEE Energy Conversion Congress and Exposition (pp. 842-849). Article 9236371 (ECCE 2020 - IEEE Energy Conversion Congress and Exposition). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE44975.2020.9236371

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title = "Shield Design for 50 kW Three-Phase Wireless Charging System",

abstract = "In this paper, magnetic field emissions (MFE) from a 50 kW bipolar coil-based three-phase wireless charging system (WCS) is investigated. Then, a shield design is proposed to suppress the MFE below the safety limit identified by the International Commission of Non-Ionized Radiation Protection (ICNIRP) guidelines. Bipolar coil-based three-phase 3 WCSs provide extremely high power-density; therefore, the 3 WCSs are highly promising for high-power fast-wireless-charging of the electric vehicles. For the high-power EV application, it is a critical challenge to design a shield to suppress the MFE below the safety limit. The traditional aluminum shield is found ineffective for the bipolar 3-WCS. The proposed shield is designed with high-permeability magnetic material, i.e. ferrite, nanocrystalline material, etc. The proposed shield is simulated in finite element analysis (FEA) and the FEA results show that the proposed magnetic shield effectively suppresses the magnetic field emission below the ICNIRP limit. The generalized design of the proposed shield can be used for even higher power bipolar coil based WCSs.",

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Mohammad, M, Pries, JL, Onar, OC, Galigekere, VP & Su, GJ 2020, Shield Design for 50 kW Three-Phase Wireless Charging System. in ECCE 2020 - IEEE Energy Conversion Congress and Exposition., 9236371, ECCE 2020 - IEEE Energy Conversion Congress and Exposition, Institute of Electrical and Electronics Engineers Inc., pp. 842-849, 12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020, Virtual, Detroit, United States, 10/11/20. https://doi.org/10.1109/ECCE44975.2020.9236371

Shield Design for 50 kW Three-Phase Wireless Charging System. / Mohammad, Mostak; Pries, Jason L.; Onar, Omer C. et al.
ECCE 2020 - IEEE Energy Conversion Congress and Exposition. Institute of Electrical and Electronics Engineers Inc., 2020. p. 842-849 9236371 (ECCE 2020 - IEEE Energy Conversion Congress and Exposition).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

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AU - Mohammad, Mostak

AU - Pries, Jason L.

AU - Onar, Omer C.

AU - Galigekere, Veda P.

AU - Su, Gui Jia

PY - 2020/10/11

Y1 - 2020/10/11

N2 - In this paper, magnetic field emissions (MFE) from a 50 kW bipolar coil-based three-phase wireless charging system (WCS) is investigated. Then, a shield design is proposed to suppress the MFE below the safety limit identified by the International Commission of Non-Ionized Radiation Protection (ICNIRP) guidelines. Bipolar coil-based three-phase 3 WCSs provide extremely high power-density; therefore, the 3 WCSs are highly promising for high-power fast-wireless-charging of the electric vehicles. For the high-power EV application, it is a critical challenge to design a shield to suppress the MFE below the safety limit. The traditional aluminum shield is found ineffective for the bipolar 3-WCS. The proposed shield is designed with high-permeability magnetic material, i.e. ferrite, nanocrystalline material, etc. The proposed shield is simulated in finite element analysis (FEA) and the FEA results show that the proposed magnetic shield effectively suppresses the magnetic field emission below the ICNIRP limit. The generalized design of the proposed shield can be used for even higher power bipolar coil based WCSs.

AB - In this paper, magnetic field emissions (MFE) from a 50 kW bipolar coil-based three-phase wireless charging system (WCS) is investigated. Then, a shield design is proposed to suppress the MFE below the safety limit identified by the International Commission of Non-Ionized Radiation Protection (ICNIRP) guidelines. Bipolar coil-based three-phase 3 WCSs provide extremely high power-density; therefore, the 3 WCSs are highly promising for high-power fast-wireless-charging of the electric vehicles. For the high-power EV application, it is a critical challenge to design a shield to suppress the MFE below the safety limit. The traditional aluminum shield is found ineffective for the bipolar 3-WCS. The proposed shield is designed with high-permeability magnetic material, i.e. ferrite, nanocrystalline material, etc. The proposed shield is simulated in finite element analysis (FEA) and the FEA results show that the proposed magnetic shield effectively suppresses the magnetic field emission below the ICNIRP limit. The generalized design of the proposed shield can be used for even higher power bipolar coil based WCSs.

KW - EMF

KW - Inductive charging

KW - electric vehicle

KW - leakage field

KW - shielding effectiveness.

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BT - ECCE 2020 - IEEE Energy Conversion Congress and Exposition

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 12th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2020

Y2 - 11 October 2020 through 15 October 2020

ER -

Shield Design for 50 kW Three-Phase Wireless Charging System

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