A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils

Alexander Aujla-Jones; Juan M. Arteaga; James Gawith; Paul D. Mitcheson

doi:10.1109/WiPDAEurope55971.2022.9936072

A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils

Alexander Aujla-Jones, Juan M. Arteaga, James Gawith, Paul D. Mitcheson

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Abstract

This paper describes the adaptation of the capac-itive cancellation method for measuring loss in the magnetic materials in an inductive power transfer (IPT) link. The work focuses on determining the power dissipated in the magnetic materials due to the mutual flux linking the coils and the magnetic material (e.g. a shield). Data were gathered from simulation and experiments. A test circuit comprising a high frequency inductive link, powered by a Class E inverter, with different test-resistors in parallel with the primary coil, was set up. Experiments were performed using five resistors and an open circuit. By estimating the value of resistance which appears in series with the mutual inductance of the link (parallel to series transformation of the test-resistances on the T-model) it is shown that the proposed method is a viable approach for characterising power loss due to the mutual flux linking a loosely coupled excitation coil and the sense coil, which corresponds to the loss in the magnetic material. From the experiments, the method was able to produce above 90% accuracy for every test value of equivalent resistance larger than 2.5 mathrm{m}Omega in series with the mutual inductance of the sense link.

Original language	English
Title of host publication	IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022
Publisher	IEEE
ISBN (Electronic)	9781665488143
DOIs	https://doi.org/10.1109/WiPDAEurope55971.2022.9936072
Publication status	Published - 8 Nov 2022
Event	2022 IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022 - Coventry, UK United Kingdom Duration: 18 Sept 2022 → 22 Sept 2022

Publication series

Name	IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022

Conference

Conference	2022 IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022
Country/Territory	UK United Kingdom
City	Coventry
Period	18/09/22 → 22/09/22

Bibliographical note

Funding Information:
ACKNOWLEDGEMENT The authors would like to acknowledge the technical support from Bumblebee Power Ltd., and the following funding sources: SitS NSF-UKRI, Wireless In-Situ Soil Sensing Network for Future Sustainable Agriculture.

Publisher Copyright:
© 2022 IEEE.

Keywords

ferrite
high frequency
high-Q
Inductive Power Transfer
Magnetic loss

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality
Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1109/WiPDAEurope55971.2022.9936072

Cite this

Aujla-Jones, A., Arteaga, J. M., Gawith, J., & Mitcheson, P. D. (2022). A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils. In IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022 (IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022). IEEE. https://doi.org/10.1109/WiPDAEurope55971.2022.9936072

A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils. / Aujla-Jones, Alexander; Arteaga, Juan M.; Gawith, James et al.
IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022. IEEE, 2022. (IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022).

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Aujla-Jones, A, Arteaga, JM, Gawith, J & Mitcheson, PD 2022, A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils. in IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022. IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022, IEEE, 2022 IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022, Coventry, UK United Kingdom, 18/09/22. https://doi.org/10.1109/WiPDAEurope55971.2022.9936072

Aujla-Jones A, Arteaga JM, Gawith J, Mitcheson PD. A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils. In IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022. IEEE. 2022. (IEEE Workshop on Wide Bandgap Power Devices and Applications in Europe, WiPDA Europe 2022). doi: 10.1109/WiPDAEurope55971.2022.9936072

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AB - This paper describes the adaptation of the capac-itive cancellation method for measuring loss in the magnetic materials in an inductive power transfer (IPT) link. The work focuses on determining the power dissipated in the magnetic materials due to the mutual flux linking the coils and the magnetic material (e.g. a shield). Data were gathered from simulation and experiments. A test circuit comprising a high frequency inductive link, powered by a Class E inverter, with different test-resistors in parallel with the primary coil, was set up. Experiments were performed using five resistors and an open circuit. By estimating the value of resistance which appears in series with the mutual inductance of the link (parallel to series transformation of the test-resistances on the T-model) it is shown that the proposed method is a viable approach for characterising power loss due to the mutual flux linking a loosely coupled excitation coil and the sense coil, which corresponds to the loss in the magnetic material. From the experiments, the method was able to produce above 90% accuracy for every test value of equivalent resistance larger than 2.5 mathrm{m}Omega in series with the mutual inductance of the sense link.

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A Measurement of the Power Dissipated due to the Mutual Flux Linking Two Loosely Coupled Coils

Abstract

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Bibliographical note

Keywords

ASJC Scopus subject areas

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