Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap

Seung Hwan Lee; Robert D. Lorenz

doi:10.1109/ECCE.2010.5617901

Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap

Seung Hwan Lee
, Robert D. Lorenz

School of Electrical and Computer Engineering

University of Wisconsin-Madison

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

31 Scopus citations

Abstract

Although 60W wireless power transfer was demonstrated in 2007, still there is no equivalent circuit model for a sub-meter air-gap, hundreds of Watts, high efficiency wireless system. A design-oriented circuit model is needed for this technology to evolve. This paper proposes an equivalent circuit model for the wireless system and analyzes the system based on the proposed model. The proposed model and its analysis are validated by means of FEA and experimental results. Furthermore, as a viable solution for high power (over 10kW) applications, losses in the wireless power transfer system are investigated in the following section. Because of the high operating frequency (MHz), skin- and proximity effect were shown to be dominant. New spatial layout of a coil is proposed that significantly reduces losses caused by skin- and proximity effect. Proposed coil design is evaluated by means of FEA.

Original language	English
Title of host publication	2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
Pages	885-892
Number of pages	8
DOIs	https://doi.org/10.1109/ECCE.2010.5617901
State	Published - 2010
Event	2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, GA, United States Duration: 12 Sep 2010 → 16 Sep 2010

Publication series

Name	2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

Conference

Conference	2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
Country/Territory	United States
City	Atlanta, GA
Period	12/09/10 → 16/09/10

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Equivalent circuit
Large air-gap
Proximity effect
Skin effect
Spatial layout
Wireless power transfer

Access to Document

10.1109/ECCE.2010.5617901

Cite this

Lee, S. H., & Lorenz, R. D. (2010). Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap. In 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings (pp. 885-892). Article 5617901 (2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings). https://doi.org/10.1109/ECCE.2010.5617901

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title = "Development and validation of model for 95\% efficiency, 220 W wireless power transfer over a 30cm air-gap",

abstract = "Although 60W wireless power transfer was demonstrated in 2007, still there is no equivalent circuit model for a sub-meter air-gap, hundreds of Watts, high efficiency wireless system. A design-oriented circuit model is needed for this technology to evolve. This paper proposes an equivalent circuit model for the wireless system and analyzes the system based on the proposed model. The proposed model and its analysis are validated by means of FEA and experimental results. Furthermore, as a viable solution for high power (over 10kW) applications, losses in the wireless power transfer system are investigated in the following section. Because of the high operating frequency (MHz), skin- and proximity effect were shown to be dominant. New spatial layout of a coil is proposed that significantly reduces losses caused by skin- and proximity effect. Proposed coil design is evaluated by means of FEA.",

keywords = "Equivalent circuit, Large air-gap, Proximity effect, Skin effect, Spatial layout, Wireless power transfer",

author = "Lee, \{Seung Hwan\} and Lorenz, \{Robert D.\}",

year = "2010",

doi = "10.1109/ECCE.2010.5617901",

language = "English",

isbn = "9781424452866",

series = "2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings",

pages = "885--892",

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note = "2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 ; Conference date: 12-09-2010 Through 16-09-2010",

}

Lee, SH & Lorenz, RD 2010, Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap. in 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings., 5617901, 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings, pp. 885-892, 2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010, Atlanta, GA, United States, 12/09/10. https://doi.org/10.1109/ECCE.2010.5617901

Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap. / Lee, Seung Hwan; Lorenz, Robert D.
2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings. 2010. p. 885-892 5617901 (2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings).

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

TY - GEN

T1 - Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap

AU - Lee, Seung Hwan

AU - Lorenz, Robert D.

PY - 2010

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N2 - Although 60W wireless power transfer was demonstrated in 2007, still there is no equivalent circuit model for a sub-meter air-gap, hundreds of Watts, high efficiency wireless system. A design-oriented circuit model is needed for this technology to evolve. This paper proposes an equivalent circuit model for the wireless system and analyzes the system based on the proposed model. The proposed model and its analysis are validated by means of FEA and experimental results. Furthermore, as a viable solution for high power (over 10kW) applications, losses in the wireless power transfer system are investigated in the following section. Because of the high operating frequency (MHz), skin- and proximity effect were shown to be dominant. New spatial layout of a coil is proposed that significantly reduces losses caused by skin- and proximity effect. Proposed coil design is evaluated by means of FEA.

AB - Although 60W wireless power transfer was demonstrated in 2007, still there is no equivalent circuit model for a sub-meter air-gap, hundreds of Watts, high efficiency wireless system. A design-oriented circuit model is needed for this technology to evolve. This paper proposes an equivalent circuit model for the wireless system and analyzes the system based on the proposed model. The proposed model and its analysis are validated by means of FEA and experimental results. Furthermore, as a viable solution for high power (over 10kW) applications, losses in the wireless power transfer system are investigated in the following section. Because of the high operating frequency (MHz), skin- and proximity effect were shown to be dominant. New spatial layout of a coil is proposed that significantly reduces losses caused by skin- and proximity effect. Proposed coil design is evaluated by means of FEA.

KW - Equivalent circuit

KW - Large air-gap

KW - Proximity effect

KW - Skin effect

KW - Spatial layout

KW - Wireless power transfer

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T3 - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

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BT - 2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings

T2 - 2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010

Y2 - 12 September 2010 through 16 September 2010

ER -

Development and validation of model for 95% efficiency, 220 W wireless power transfer over a 30cm air-gap

Abstract

Publication series

Conference

UN SDGs

Keywords

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