Magnetic Resonance-Based Wireless Power Transmission through Concrete Structures

Kim, Jimin; Han, Minseok; Sohn, Hoon

doi:10.5515/jkiees.2015.15.2.104

Cited by 22 publications

(13 citation statements)

References 22 publications

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“…The impedance of the cement resistors, including large parasitic inductances, were separately characterized by the VNA measurements to achieve high accuracy, rather than directly utilizing the Eqs. (7) and (8). As mentioned in Section III, V 1 corresponds to the fundamental frequency component of the DC-AC power source.…”

Section: Design Of Compensation Networkmentioning

confidence: 99%

“…Today, WPT research has mainly focused on magnetic resonance and inductive coupling methods because of their high efficiency and simplicity. The magnetic resonance method using four coils has an operating frequency of several MHz and can transfer energy across a midrange distance due to the high quality factors (Q-factors) of the coils [6,7]. Since high frequency operation at several MHz causes critical switching loss in semiconductor devices for high-power applications, the magnetic resonance method is appropriate for low-power applications across a midrange distance.…”

Section: Introductionmentioning

confidence: 99%

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An Effective Experimental Optimization Method for Wireless Power Transfer System Design Using Frequency Domain Measurement

Jeong¹,

Kim²,

Jung³

et al. 2017

J Electromagn Eng Sci

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This paper proposes an experimental optimization method for a wireless power transfer (WPT) system. The power transfer characteristics of a WPT system with arbitrary loads and various types of coupling and compensation networks can be extracted by frequency domain measurements. The various performance parameters of the WPT system, such as input real/imaginary/apparent power, power factor, efficiency, output power and voltage gain, can be accurately extracted in a frequency domain by a single passive measurement. Subsequently, the design parameters can be efficiently tuned by separating the overall design steps into two parts. The extracted performance parameters of the WPT system were validated with time-domain experiments.

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Section: Design Of Compensation Networkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Effective Experimental Optimization Method for Wireless Power Transfer System Design Using Frequency Domain Measurement

Jeong¹,

Kim²,

Jung³

et al. 2017

J Electromagn Eng Sci

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show abstract

“…One conventional MRCWPT mode is one-transmitter-to-one-receiver MRCWPT, and the system can achieve high efficiency over a long distance of several meters [14,15]. Due to the space and cost constraints, this kind of MRCWPT system is not suitable for large number of electrical devices [16,17].…”

Section: Introductionmentioning

confidence: 99%

Omnidirectional Wireless Power Transfer System With Multiple Receivers and a Single Wire Wound Spiral Transmitter

Wang¹,

Deng²,

Luo³

et al. 2019

PIER C

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Last decade has witnessed dramatic advancements in wireless charging distance of magnetic resonant coupling wireless power transfer (MRCWPT) for various portable electronic devices. Driven by the demand of cost-effective and compact system working for multiple receivers, a novel omnidirectional MRCWPT system with a single wire wound spiral transmitter and a single power source is proposed in this work. Besides, an equivalent circuit model is established to derive the power transfer efficiency (PTE) of this novel MRCWPT system. Finite element simulation results have shown that the magnetic field distribution for the proposed model is uniform in all directions. And the PTE of the system depending on the distance between the transmitter and receivers is demonstrated to be independent of the receiving angles. Finally, the theoretical analysis of the simulation results is verified by practical experimental results, which shows that the PTE of the system reaches 60% at the distance of 160 mm and the resonant frequency of 15.5 MHz.

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“…Wireless power transfer (WPT) technology transfers electrical energy using electromagnetic waves without electrical wires in various industries related to remote energy transfer, μ‐sensors, digital IT consumer devices, and electric vehicles (EV) . Biomedical microsystems are required to measure physiological signals such as cardiac arrhythmia, blood pressure, and glucose levels, as well as monitor automatic physiological functions .…”

Section: Introductionmentioning

confidence: 99%

Open-loop self-adaptive wireless power transfer system for medical implants

Seo¹,

Khang

Chae

et al. 2016

Microw. Opt. Technol. Lett.

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An open-loop self-adaptive wireless power transfer system using magnetic resonance coupling for implantable biosensors, which ABSTRACT: In this article, the phase center of antipodal Vivaldi antennas is investigated, because the phase center location of antennas is an important parameter for pulse transmission/reception. A comparison between these models is presented and our model is proposed to reduce their drawbacks by some techniques to show the effect of these techniques or benefits of them by numerical simulations and experimental results. Vivaldi antenna is celebrated for its benefits such as low profile, easy fabrication, high gain, end-fire radiation pattern. In this article, the phase center behavior in antipodal Vivaldi antenna is shown and a novel implementation of a perpendicular lens and planner aperture are presented on an antipodal antenna for modification of the Phase-Center characteristic in single. We have presented a novel technique for amending pattern and gain parameters to achieve linear phase center in the wide bandwidth. In this new method, we have combined the aperture method with Vivaldi antenna. The final antenna shows good performance in 2-18 GHz with VSWR less than 2 and the gain of the antenna is enhanced more than 1-2 dBi in comparison with conventional Vivaldi antenna. The antenna is fabricated on roger 4003 and the experimental result confirms the simulations.

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Magnetic Resonance-Based Wireless Power Transmission through Concrete Structures

Cited by 22 publications

References 22 publications

An Effective Experimental Optimization Method for Wireless Power Transfer System Design Using Frequency Domain Measurement

An Effective Experimental Optimization Method for Wireless Power Transfer System Design Using Frequency Domain Measurement

Omnidirectional Wireless Power Transfer System With Multiple Receivers and a Single Wire Wound Spiral Transmitter

Open-loop self-adaptive wireless power transfer system for medical implants

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