An Inductive Power Transfer through metal object

Imoru, ỌdunAyọ; Jassal, Anoop; Polinder, H.; Nieuwkoop, E.; Tsado, Jacob; Jimoh, Adisa A.

doi:10.1109/ifeec.2013.6687511

Cited by 24 publications

(15 citation statements)

References 24 publications

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“…Due to the shielding effect or skin effect in metal, electromagnetic waves cannot effectively pass through metal, and especially ferrous metal barriers. However, there have still been three kinds of electromagnetic coupling-based methods achieving this target according to literature publications: inductive coupling [ 4 , 5 , 6 , 7 , 8 ], capacitive coupling [ 9 , 10 , 11 ] and magnetic resonance coupling [ 12 ]. We will describe each of these methods respectively in the following subsections.…”

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

“…Though IPT has achieved great success in theoretical development and industrial applications for wireless power delivery in certain areas [ 13 , 14 , 15 ], it is rarely used for power transfer through a conductive metal because generally the metallic medium restricts the power transfer due to losses causing by the shielding effects. However, for low energy applications, several publications have shown that IPT can be used to transfer an acceptable amount of power through thin metal walls [ 4 , 5 , 6 , 7 , 8 ].…”

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

“…Imoru et al [ 4 ] studied the feasibility of power transfer through metal pipes using an analytical model governing the mechanism of IPT. The analytical model results were also checked experimentally.…”

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

“… Diagram for power transfer through a metal pipe using the IPT method, redrawn from Imoru et al [ 4 ]. …”

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

“…According to the published literature reports, there have been several solutions for through-metal-wall power delivery and/or data transmission without intrusive procedures like drilling holes in the metal walls. Among these solutions, one category of solutions is called electromagnetic coupling-based methods, which involve inductive coupling [ 4 , 5 , 6 , 7 , 8 ], capacitive coupling [ 9 , 10 , 11 ] and magnetic resonance coupling [ 12 ]. Some amount of power and data transmission through metal walls can be achievable using electromagnetic-based solutions.…”

Section: Introductionmentioning

confidence: 99%

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Through-Metal-Wall Power Delivery and Data Transmission for Enclosed Sensors: A Review

Yang

Zhao

et al. 2015

Sensors

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The aim of this review was to assess the current viable technologies for wireless power delivery and data transmission through metal barriers. Using such technologies sensors enclosed in hermetical metal containers can be powered and communicate through exterior power sources without penetration of the metal wall for wire feed-throughs. In this review, we first discuss the significant and essential requirements for through-metal-wall power delivery and data transmission and then we: (1) describe three electromagnetic coupling based techniques reported in the literature, which include inductive coupling, capacitive coupling, and magnetic resonance coupling; (2) present a detailed review of wireless ultrasonic through-metal-wall power delivery and/or data transmission methods; (3) compare various ultrasonic through-metal-wall systems in modeling, transducer configuration and communication mode with sensors; (4) summarize the characteristics of electromagnetic-based and ultrasound-based systems, evaluate the challenges and development trends. We conclude that electromagnetic coupling methods are suitable for through thin non-ferromagnetic metal wall power delivery and data transmission at a relatively low data rate; piezoelectric transducer-based ultrasonic systems are particularly advantageous in achieving high power transfer efficiency and high data rates; the combination of more than one single technique may provide a more practical and reliable solution for long term operation.

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Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

“… Diagram for power transfer through a metal pipe using the IPT method, redrawn from Imoru et al [ 4 ]. …”

Section: Methods For Through-metal-wall Power Delivery and Data Trmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Through-Metal-Wall Power Delivery and Data Transmission for Enclosed Sensors: A Review

Yang

Zhao

et al. 2015

Sensors

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A Study on the Shielding Effect of Ferromagnetic Pipe Wall in Inductive Power Transfer

Kang

Lee²,

Um³

et al. 2022

J. Electr. Eng. Technol.

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Analytical optimization of piezoelectric acoustic power transfer systems

et al. 2020

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Acoustic power transfer and communication through metal layers is of great interest in many applications where the integrity of metal boxes, tanks, pipes or walls must be preserved by avoiding through-hole electrical connections. While acoustic power transfer has been widely studied last decades, the optimization of such systems has not been assessed comprehensively regarding the choice of transducers’ dimensions and materials and the impact of the wall characteristic acoustic impedance. This paper stands at answering these optimization issues, using a new implementation of an analytical model and two figures of merit to evaluate performances: the power transfer efficiency and a new figure of merit, the normalized transmitted power, a crucial characteristic for electronics implementation. Among other results, we disprove the commonly used design rule stating that equalizing the characteristic acoustic impedance of wall and transducers is the best option. We propose a method to quantify the impact of acoustic impedance mismatches on performances and show that intermediary layers sized with our optimization process can solve these acoustic impedance issues, resulting in an important gain in the transmitted power (multiplied by 40 in our example) and opening up great opportunities for the acoustic power transfer technology.

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An Inductive Power Transfer through metal object

Cited by 24 publications

References 24 publications

Through-Metal-Wall Power Delivery and Data Transmission for Enclosed Sensors: A Review

Through-Metal-Wall Power Delivery and Data Transmission for Enclosed Sensors: A Review

A Study on the Shielding Effect of Ferromagnetic Pipe Wall in Inductive Power Transfer

Analytical optimization of piezoelectric acoustic power transfer systems

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