Wireless power transfer using relay resonators

Saha, Chinmoy; Anya, Ihechiluru Fortune Chinatu; Alexandru, Cristina; Jinks, Robert

doi:10.1063/1.5022032

Cited by 12 publications

(4 citation statements)

References 21 publications

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“…The work by [47] investigates horizontally configured tuning position of prototype relay coils to assess power transfer efficiency as a function of increasing operating distance between the transmitter and receiver coils. For the purpose of determining the ideal separation between the transmitter and receiver, a prototype relay coil system was assessed.…”

Section: Review Of Related Workmentioning

confidence: 99%

Wireless Power Transfer: A Review of Existing Technologies

Nnamdi¹,

Asianuba²

2023

EJENG

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Wireless Power Transfer (WPT) can be described as the processing of transmitting electricity without the use of wires. It has been increasingly used in places where battery depletion and replacement are major issues. WPT Technology are being used in different sectors. They include wireless charging, Electric vehicles, consumer electronics, etc. The paper describes the various types of WPT technologies; Inductive Coupling, Magnetic Resonance and Radio Frequency (RF) technology. It also discusses the advantages and shortfalls of each type. An extensive survey of past works was discussed. Results from the research findings showed that distance and conversion efficiency were limiting factors in implementing wireless transfer technology.

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Section: Review Of Related Workmentioning

confidence: 99%

Wireless Power Transfer: A Review of Existing Technologies

Nnamdi¹,

Asianuba²

2023

EJENG

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“…With the development of WPT devices, the efficient long-range and robust WPT is highly desirable but also challenging. [46][47][48][49] Recently, the possibility of obtaining photonic topological modes that are robust against perturbations by mimicking the topological properties of solid state system, has brought a profound impact on optical sciences. [50,51] In particular, topological non-Hermitian systems provide an effective avenue for studying the intriguing properties of topological structures involving PT symmetry and developing new wave functional devices.…”

Section: Non-hermitian Topological Dimer Chain For Long-range Robust Wptmentioning

confidence: 99%

Efficient and stable wireless power transfer based on the non-Hermitian physics

et al. 2022

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As one of the most attractive non-radiative power transfer mechanisms without cables, efficient magnetic resonance wireless power transfer (WPT) in the near field has been extensively developed in recent years, and promoted a variety of practical applications, such as mobile phones, medical implant devices and electric vehicles. However, the physical mechanism behind some key limitations of the resonance WPT, such as frequency splitting and size-dependent efficiency, is not very clear under the widely used circuit model. Here, we review the recently developed efficient and stable resonance WPT based on non-Hermitian physics, which starts from a completely different avenue (utilizing loss and gain) to introduce novel functionalities to the resonance WPT. From the perspective of non-Hermitian photonics, the coherent and incoherent effects compete and coexist in the WPT system, and the weak stable of energy transfer mainly comes from the broken phase associated with the phase transition of parity–time symmetry. Based on this basic physical framework, some optimization schemes are proposed, including using nonlinear effect, using bound states in the continuum, or resorting to the system with high-order parity-time symmetry. Moreover, the combination of non-Hermitian physics and topological photonics in multi-coil system also provides a versatile platform for long-range robust WPT with topological protection. Therefore, the non-Hermitian physics can not only exactly predict the main results of current WPT systems, but also provide new ways to solve the difficulties of previous designs.

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“…For instance, pancake type coils are used in induction hobs because of their planar architecture [4][5][6][7][8][9]. Similarly, planar coils are chosen for wireless power transfer since they have a two-dimensional structure and can be mounted on a surface without causing too much altitude change [10][11][12][13][14][15]. On the other hand, solenoidal type coils are preferred to be used mostly for induction heating and melting applications [16][17][18][19] together with sensing operations [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

2022

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This paper reports a new strand wire winding method in a solenoidal coil with limited geometry that enables good impedance matching. In the proposed method strand wires are wound layer-by-layer on top of each other allowing one to set equivalent inductance and resistance of the coil to desired values while obtaining dense magnetic flux and high current carrying capacity. As a proof-of-concept demonstration, simple model setups were constructed with solenoidal coils composed of copper wire strands wound according to the proposed method, and a plastic pipe. The measurements were repeated with a metal shell placed inside the coil to model a complete heating system. System inductance and resistance were measured at two different frequencies. The results show that with the new winding method it is possible to increase a coil's turn number and the number of strand layers composed by the coil. Also, adding and removing strand layers in the proposed coil architectures enable inductance and resistance values to decrease and increase, respectively, in a controlled way. To understand changes of system parameters, simulations were also performed. The calculated inductance and resistance values in the simulations agree well with the measurement results and magnetic flux distribution created in the system demonstrates the changes.

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Wireless power transfer using relay resonators

Abstract: This document is the author's post-print version, incorporating any revisions agreed during the peer-review process. Some differences between the published version and this version may remain and you are advised to consult the published version if you wish to cite from it.

Cited by 12 publications

References 21 publications

Wireless Power Transfer: A Review of Existing Technologies

Wireless Power Transfer: A Review of Existing Technologies

Efficient and stable wireless power transfer based on the non-Hermitian physics

Archives of Electrical Engineering

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