Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles

Mostak Mohammad; Seungdeog Choi

doi:10.1109/APEC.2018.8341192

Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles

Mostak Mohammad, Seungdeog Choi

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

42 Scopus citations

Abstract

In this paper, an optimized core structure is proposed for the double-D (DD) power pad to reduce its core loss in a wireless charging system for Electric and Plug-in Hybrid Electric Vehicle (EV/PHEV) application. At around 85 kHz operating frequency, the core loss is found to be one of the most significant loss in typical wireless charging system of high power application. The core loss in power ferrite mainly depends on the operating frequency and magnetic field density in the core. The frequency is usaully fixed for certain appication, therefore, the magnetic field density in the core is be to optimized to reduce the loss. The magnetic field density in core of a double-D (DD) pad has very different pattern compared to unpolar pad; therefore traditional bar or plate core does not provide the optimum performance considering core loss. In this paper, an optimized core structure is proposed to make the flux density uniform in the core and minimize its loss. The proposed optimized model is simulated in finite element analysis (FEA), and compared with traditional flat type core. Finally, the proposed model is verified through a 3.2kW wireless Double-D (DD) type wireless charging pad.

Original language	English
Title of host publication	APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1350-1356
Number of pages	7
ISBN (Electronic)	9781538611807
DOIs	https://doi.org/10.1109/APEC.2018.8341192
State	Published - Apr 18 2018
Externally published	Yes
Event	33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 - San Antonio, United States Duration: Mar 4 2018 → Mar 8 2018

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume	2018-March

Conference

Conference	33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
Country/Territory	United States
City	San Antonio
Period	03/4/18 → 03/8/18

Keywords

Bipolar power pad
Core loss
Eddy loss
Electric vehicle
Ferrite
Inductive charging
Shield
Wireless power transfer

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/APEC.2018.8341192

Cite this

Mohammad, M., & Choi, S. (2018). Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles. In APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition (pp. 1350-1356). (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2018-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2018.8341192

Mohammad, Mostak ; Choi, Seungdeog. / Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles. APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1350-1356 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

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title = "Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles",

abstract = "In this paper, an optimized core structure is proposed for the double-D (DD) power pad to reduce its core loss in a wireless charging system for Electric and Plug-in Hybrid Electric Vehicle (EV/PHEV) application. At around 85 kHz operating frequency, the core loss is found to be one of the most significant loss in typical wireless charging system of high power application. The core loss in power ferrite mainly depends on the operating frequency and magnetic field density in the core. The frequency is usaully fixed for certain appication, therefore, the magnetic field density in the core is be to optimized to reduce the loss. The magnetic field density in core of a double-D (DD) pad has very different pattern compared to unpolar pad; therefore traditional bar or plate core does not provide the optimum performance considering core loss. In this paper, an optimized core structure is proposed to make the flux density uniform in the core and minimize its loss. The proposed optimized model is simulated in finite element analysis (FEA), and compared with traditional flat type core. Finally, the proposed model is verified through a 3.2kW wireless Double-D (DD) type wireless charging pad.",

keywords = "Bipolar power pad, Core loss, Eddy loss, Electric vehicle, Ferrite, Inductive charging, Shield, Wireless power transfer",

author = "Mostak Mohammad and Seungdeog Choi",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 ; Conference date: 04-03-2018 Through 08-03-2018",

year = "2018",

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series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

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Mohammad, M & Choi, S 2018, Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles. in APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2018-March, Institute of Electrical and Electronics Engineers Inc., pp. 1350-1356, 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018, San Antonio, United States, 03/4/18. https://doi.org/10.1109/APEC.2018.8341192

Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles. / Mohammad, Mostak; Choi, Seungdeog.
APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., 2018. p. 1350-1356 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2018-March).

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

TY - GEN

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AU - Mohammad, Mostak

AU - Choi, Seungdeog

PY - 2018/4/18

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N2 - In this paper, an optimized core structure is proposed for the double-D (DD) power pad to reduce its core loss in a wireless charging system for Electric and Plug-in Hybrid Electric Vehicle (EV/PHEV) application. At around 85 kHz operating frequency, the core loss is found to be one of the most significant loss in typical wireless charging system of high power application. The core loss in power ferrite mainly depends on the operating frequency and magnetic field density in the core. The frequency is usaully fixed for certain appication, therefore, the magnetic field density in the core is be to optimized to reduce the loss. The magnetic field density in core of a double-D (DD) pad has very different pattern compared to unpolar pad; therefore traditional bar or plate core does not provide the optimum performance considering core loss. In this paper, an optimized core structure is proposed to make the flux density uniform in the core and minimize its loss. The proposed optimized model is simulated in finite element analysis (FEA), and compared with traditional flat type core. Finally, the proposed model is verified through a 3.2kW wireless Double-D (DD) type wireless charging pad.

AB - In this paper, an optimized core structure is proposed for the double-D (DD) power pad to reduce its core loss in a wireless charging system for Electric and Plug-in Hybrid Electric Vehicle (EV/PHEV) application. At around 85 kHz operating frequency, the core loss is found to be one of the most significant loss in typical wireless charging system of high power application. The core loss in power ferrite mainly depends on the operating frequency and magnetic field density in the core. The frequency is usaully fixed for certain appication, therefore, the magnetic field density in the core is be to optimized to reduce the loss. The magnetic field density in core of a double-D (DD) pad has very different pattern compared to unpolar pad; therefore traditional bar or plate core does not provide the optimum performance considering core loss. In this paper, an optimized core structure is proposed to make the flux density uniform in the core and minimize its loss. The proposed optimized model is simulated in finite element analysis (FEA), and compared with traditional flat type core. Finally, the proposed model is verified through a 3.2kW wireless Double-D (DD) type wireless charging pad.

KW - Bipolar power pad

KW - Core loss

KW - Eddy loss

KW - Electric vehicle

KW - Ferrite

KW - Inductive charging

KW - Shield

KW - Wireless power transfer

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DO - 10.1109/APEC.2018.8341192

M3 - Conference contribution

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T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

SP - 1350

EP - 1356

BT - APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018

Y2 - 4 March 2018 through 8 March 2018

ER -

Mohammad M, Choi S. Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles. In APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1350-1356. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2018.8341192

Optimization of ferrite core to reduce the core loss in double-D pad of wireless charging system for electric vehicles

Abstract

Publication series

Conference

Keywords

UN SDGs

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