Optimization of wireless power transmission through resonant coupling

Kim, Min Su; Kang, Seong Woo; Cheon, Sang-Hoon; Lee, Myung‐Lae; lee, Jong-Moo; Zyung, Taehyoung

doi:10.1109/speedam.2010.5544862

Cited by 41 publications

(33 citation statements)

References 6 publications

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“…The use of resonant coupling technology gained importance in wireless power transmission with the work of Kim et al [7]. He utilized the concepts of Nikola Tesla to develop highly efficient wireless power transmission systems.…”

Section: Capabilities and Limitations Of Research Work A Chronologicmentioning

confidence: 99%

“…With the end of year 2009, various conceptual aspect and theoretical insights were understood about wireless power transmission that actually developed from applications. The improvement in the experimental findings of Kim et al [7] was proposed by the research work of Beh et al [10]. The researchers used impedance matching technology to increase the efficiency of wireless power transmission systems, via magnetic resonance methodology.…”

Section: Capabilities and Limitations Of Research Work A Chronologicmentioning

confidence: 99%

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Review of Different Techniques used for Wireless Transmission of Electrical Energy

Sarwar

Nallagownden

Baharudin

et al. 2016

MATEC Web of Conferences

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Abstract. The wireless transfer of electricity has gained vast importance in recent years. Many attempts had been done in this regard. The information generated is quite scattered and distributed. There is a need to harmonize the research findings of various researchers in an adept way. This review paper presents the critical evaluation of the research works done in the field of wireless power transmission since 1891. The attempt has been done in a cohesive way to connect the various findings and discussing their capabilities and limitations. The paper also highlights the major challenges faced by the research area and the new area of applications. The study closes with a conclusive review of latest scientific techniques and theoretical concepts, currently prevalent in wireless power transmission.

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Section: Capabilities and Limitations Of Research Work A Chronologicmentioning

confidence: 99%

Section: Capabilities and Limitations Of Research Work A Chronologicmentioning

confidence: 99%

Review of Different Techniques used for Wireless Transmission of Electrical Energy

Sarwar

Nallagownden

Baharudin

et al. 2016

MATEC Web of Conferences

View full text Add to dashboard Cite

show abstract

“…Transferring energy between wires through magnetic fields is inductive coupling. Magnetic resonant coupling uses the same principles as inductive coupling, but it uses resonance to increase the range at which the energy transfer can efficiently take place [4], [5]. Resonant inductive coupling is the near field wireless transmission of electrical energy between two coils that are tuned to resonate at the same frequency and is depicted in Fig.…”

Section: Resonant Inductive Couplingmentioning

confidence: 99%

High Frequency Fed Unity Power Factor AC-DC Converter For Wireless Power Transfer Applications

Alex¹,

George²

2015

International Journal of Innovative Research in Electrical, Ele

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Wireless power transfer over near to midrange distances have been receiving much attention owing to their potential applications such as biomedical implants, charging pad platforms for mobile devices and electric vehicle recharging. The newest technologies mostly depend on inductive coupling techniques to transmit power between transmitting and receiving coils. Wireless power transfer (WPT) receivers are devices that can transmit power to electrical devices without any wired connections. But there is a lack of research targeting the optimal design of the power converter at the receiver side. The novel scheme presents a power converter and its control circuit for high frequency fed AC to DC conversion for wireless power transfer. Wireless power transfer is achieved via resonant inductive coupling between the transmitting and receiving coils. Based on the resonant technique, the input current is shaped to be sinusoidal and is forced to follow the high-frequency sinusoidal input voltage so as to achieve unity power factor. A control scheme is also proposed for the converter which can be realized by simple operational amplifiers and digital logic gates. The distinctive features of this converter are favourable for future high-frequency AC power transfer system operating in the range from a few hundred kHz to the MHz range.

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“…Sony Corp. also announced a CMRS capable of a 60 W transfer over a distance of 50 cm with a coil-to-coil efficiency of 80 % [12]. The Electronics and Telecommunications Research Institute (ETRI) also presented experimental results for its CMRS by lighting LED lamps [13].…”

Section: Nomenclaturementioning

confidence: 99%

Frequency-Domain Circuit Model and Analysis of Coupled Magnetic Resonance Systems

Huh¹,

Lee²,

Choi³

et al. 2013

Journal of Power Electronics

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An explicit frequency-domain circuit model for the conventional coupled magnetic resonance system (CMRS) is newly proposed in this paper. Detail circuit parameters such as the leakage inductances, magnetizing inductances, turn-ratios, internal coil resistances, and source/load resistances are explicitly included in the model. Accurate overall system efficiency, DC gain, and key design parameters are deduced from the model in closed form equations, which were not available in previous works. It has been found that the CMRS can be simply described by an equivalent voltage source, resistances, and ideal transformers when it is resonated to a specified frequency in the steady state. It has been identified that the voltage gain of the CMRS was saturated to a specific value although the source side or the load side coils were strongly coupled. The phase differences between adjacent coils were π/2, which should be considered for the EMF cancellations. The analysis results were verified by simulations and experiments. A detailed circuit-parameter-based model was verified by experiments for 500 kHz by using a new experimental kit with a class-E inverter. The experiments showed a transfer of 1.38 W and a 40 % coil to coil efficiency.

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Optimization of wireless power transmission through resonant coupling

Cited by 41 publications

References 6 publications

Review of Different Techniques used for Wireless Transmission of Electrical Energy

Review of Different Techniques used for Wireless Transmission of Electrical Energy

High Frequency Fed Unity Power Factor AC-DC Converter For Wireless Power Transfer Applications

Frequency-Domain Circuit Model and Analysis of Coupled Magnetic Resonance Systems

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