Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems

Wenli Shi; Jianning Dong; Soumya Bandyopadhyay; Francesca Grazian; Thiago Batista Soeiro; Pavol Bauer

doi:10.1109/IECON.2019.8926782

Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems

Wenli Shi
, Jianning Dong
, Soumya Bandyopadhyay
, Francesca Grazian
, Thiago Batista Soeiro
, Pavol Bauer

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

10 Citations (Scopus)

Abstract

This paper aims to identify the difference between foreign object (FO) and misalignment in terms of their influence on inductive power transfer (IPT) systems. This is performed through magnetic and equivalent circuit analysis of the mutual inductance, primary input impedance, charging pad terminal impedance and current harmonics. Experiment measurements on an IPT prototype are carried out to verify the analysis. It is found that: the charging pad terminal impedance under FO condition has a more pronounced decrement than that of misalignment; the mutual inductance under FO condition shows negative correlation with frequency, while positive for misalignment; the absolute value of the input impedance is decreased by FO and increased by misalignment; the influence of FO and misalignment on the THD of the input current is minimal. Finally, it is possible to detect FO and distinguish it from misalignment, through the variation of the primary pad terminal inductance, as well as the frequency dependence of the primary input impedance and the mutual inductance.

Original language	English
Title of host publication	IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society
Publisher	Institute of Electrical and Electronics Engineers
Pages	2634-2639
Number of pages	6
ISBN (Electronic)	978-1-7281-4878-6
DOIs	https://doi.org/10.1109/IECON.2019.8926782
Publication status	Published - 9 Dec 2019
Externally published	Yes
Event	45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019 - Lisbon, Portugal Duration: 14 Oct 2019 → 17 Oct 2019 Conference number: 45

Conference

Conference	45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Abbreviated title	IECON 2019
Country/Territory	Portugal
City	Lisbon
Period	14/10/19 → 17/10/19

Keywords

current harmonics
foreign objects
inductive power transfer
misalignment
wireless power transfer

Access to Document

10.1109/IECON.2019.8926782

Cite this

Shi, W., Dong, J., Bandyopadhyay, S., Grazian, F., Soeiro, T. B., & Bauer, P. (2019). Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems. In IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society (pp. 2634-2639). Article 8926782 Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/IECON.2019.8926782

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title = "Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems",

abstract = "This paper aims to identify the difference between foreign object (FO) and misalignment in terms of their influence on inductive power transfer (IPT) systems. This is performed through magnetic and equivalent circuit analysis of the mutual inductance, primary input impedance, charging pad terminal impedance and current harmonics. Experiment measurements on an IPT prototype are carried out to verify the analysis. It is found that: the charging pad terminal impedance under FO condition has a more pronounced decrement than that of misalignment; the mutual inductance under FO condition shows negative correlation with frequency, while positive for misalignment; the absolute value of the input impedance is decreased by FO and increased by misalignment; the influence of FO and misalignment on the THD of the input current is minimal. Finally, it is possible to detect FO and distinguish it from misalignment, through the variation of the primary pad terminal inductance, as well as the frequency dependence of the primary input impedance and the mutual inductance.",

keywords = "current harmonics, foreign objects, inductive power transfer, misalignment, wireless power transfer",

author = "Wenli Shi and Jianning Dong and Soumya Bandyopadhyay and Francesca Grazian and Soeiro, \{Thiago Batista\} and Pavol Bauer",

year = "2019",

month = dec,

day = "9",

doi = "10.1109/IECON.2019.8926782",

language = "English",

pages = "2634--2639",

booktitle = "IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society",

publisher = "Institute of Electrical and Electronics Engineers",

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note = "45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019, IECON 2019 ; Conference date: 14-10-2019 Through 17-10-2019",

}

Shi, W, Dong, J, Bandyopadhyay, S, Grazian, F, Soeiro, TB & Bauer, P 2019, Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems. in IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society., 8926782, Institute of Electrical and Electronics Engineers, pp. 2634-2639, 45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019, Lisbon, Portugal, 14/10/19. https://doi.org/10.1109/IECON.2019.8926782

Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems. / Shi, Wenli; Dong, Jianning; Bandyopadhyay, Soumya et al.
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society. Institute of Electrical and Electronics Engineers, 2019. p. 2634-2639 8926782.

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

TY - GEN

T1 - Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems

AU - Shi, Wenli

AU - Dong, Jianning

AU - Bandyopadhyay, Soumya

AU - Grazian, Francesca

AU - Soeiro, Thiago Batista

AU - Bauer, Pavol

N1 - Conference code: 45

PY - 2019/12/9

Y1 - 2019/12/9

N2 - This paper aims to identify the difference between foreign object (FO) and misalignment in terms of their influence on inductive power transfer (IPT) systems. This is performed through magnetic and equivalent circuit analysis of the mutual inductance, primary input impedance, charging pad terminal impedance and current harmonics. Experiment measurements on an IPT prototype are carried out to verify the analysis. It is found that: the charging pad terminal impedance under FO condition has a more pronounced decrement than that of misalignment; the mutual inductance under FO condition shows negative correlation with frequency, while positive for misalignment; the absolute value of the input impedance is decreased by FO and increased by misalignment; the influence of FO and misalignment on the THD of the input current is minimal. Finally, it is possible to detect FO and distinguish it from misalignment, through the variation of the primary pad terminal inductance, as well as the frequency dependence of the primary input impedance and the mutual inductance.

AB - This paper aims to identify the difference between foreign object (FO) and misalignment in terms of their influence on inductive power transfer (IPT) systems. This is performed through magnetic and equivalent circuit analysis of the mutual inductance, primary input impedance, charging pad terminal impedance and current harmonics. Experiment measurements on an IPT prototype are carried out to verify the analysis. It is found that: the charging pad terminal impedance under FO condition has a more pronounced decrement than that of misalignment; the mutual inductance under FO condition shows negative correlation with frequency, while positive for misalignment; the absolute value of the input impedance is decreased by FO and increased by misalignment; the influence of FO and misalignment on the THD of the input current is minimal. Finally, it is possible to detect FO and distinguish it from misalignment, through the variation of the primary pad terminal inductance, as well as the frequency dependence of the primary input impedance and the mutual inductance.

KW - current harmonics

KW - foreign objects

KW - inductive power transfer

KW - misalignment

KW - wireless power transfer

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DO - 10.1109/IECON.2019.8926782

M3 - Conference contribution

AN - SCOPUS:85083970369

SP - 2634

EP - 2639

BT - IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

PB - Institute of Electrical and Electronics Engineers

T2 - 45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019

Y2 - 14 October 2019 through 17 October 2019

ER -

Comparative Study of Foreign Object and Misalignment in Inductive Power Transfer Systems

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Keywords

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