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Mid-range inductive power transfer through conductive media using split toroidal loop-gap resonators Wandinger, Joseph N.

Abstract

We investigated mid-range inductive power transfer (IPT) through salt water. Our inductivelycoupled transmitters and receivers were made from loop-gap resonators (LGRs) having resonant frequencies near 100 MHz. Electric fields are confined within the narrow gaps of the LGRs, making it possible to strongly suppress the power dissipation associated with electric fields in a conductive medium. Therefore, the power transfer efficiency in our system was limited by magnetic field dissipation in the conducting medium. We measured the power transfer efficiency and spatial bandwidth of the system as a function of both the distance between the transmitter and receiver and the conductivity of the water. We also present an approximate calculation of the power dissipation expected from an oscillating magnetic field in a conducting medium. The results of the calculation are used to identify important design parameters for practical systems.

Item Metadata

Title
Mid-range inductive power transfer through conductive media using split toroidal loop-gap resonators
Creator
Wandinger, Joseph N.
Date Issued
2021-04
Description
We investigated mid-range inductive power transfer (IPT) through salt water. Our inductivelycoupled transmitters and receivers were made from loop-gap resonators (LGRs) having resonant frequencies near 100 MHz. Electric fields are confined within the narrow gaps of the LGRs, making it possible to strongly suppress the power dissipation associated with electric fields in a conductive medium. Therefore, the power transfer efficiency in our system was limited by magnetic field dissipation in the conducting medium. We measured the power transfer efficiency and spatial bandwidth of the system as a function of both the distance between the transmitter and receiver and the conductivity of the water. We also present an approximate calculation of the power dissipation expected from an oscillating magnetic field in a conducting medium. The results of the calculation are used to identify important design parameters for practical systems.
Genre
Graduating Project
Type
Text
Language
eng
Series
University of British Columbia. PHYS 449
Date Available
2021-06-09
Provider
Vancouver : University of British Columbia Library
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International
DOI
10.14288/1.0398314
URI
http://hdl.handle.net/2429/78561
Affiliation
Science, Irving K. Barber Faculty of (Okanagan)
Peer Review Status
Unreviewed
Scholarly Level
Undergraduate
Rights URI
http://creativecommons.org/licenses/by-nc-nd/4.0/
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Attribution-NonCommercial-NoDerivatives 4.0 International