Low-power near-field magnetic wireless energy transfer links: A review of architectures and design approaches

Eteng, Akaa Agbaeze; Rahim, S. K. A.; Leow, Chee Yen; Jayaprakasam, Suhanya; Chew, Beng Wah

doi:10.1016/j.rser.2017.04.051

Cited by 41 publications

(20 citation statements)

References 174 publications

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“…The research in WPT can be in general divided into five categories [32], among which the allowance of no magnetic coupling (k = 0) is desired for sensing purpose. The power transfer efficiency (from source to load) is one of the more widely investigated performance characterizations of non-radiative WPT [33]. When the link is loosely coupled (k << 1) [34], the power transfer efficiency is low.…”

Section: B Reader and Interrogation Methodsmentioning

confidence: 99%

Feature Extraction for Robust Crack Monitoring Using Passive Wireless RFID Antenna Sensors

et al. 2018

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Radio frequency identification (RFID) tag antenna based passive wireless sensors are receiving increasing attentions for structural health monitoring (SHM) in large-scale infrastructure. For permanently-installed monitoring, robustness to measurement variation including environmental conditions is a practical issue. This paper retrospects the communication principle of magnetic resonant coupling (MRC) for low frequency (LF) passive wireless RFID antenna sensors. The influence of communication is uncovered and essentially separated from sensing through two steps: sweep (source) frequency to capture the system behavior, i. e., resonance frequency range; multiple feature extraction, fusion, and selection in conjunction with normalization for the selected time-domain feature of peak to peak (P2P). By this way, the robustness of the low-cost RFID sensing system is enhanced. The proposed method is validated by the case study in open crack detection and characterization under varied measurement conditions.

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Section: B Reader and Interrogation Methodsmentioning

confidence: 99%

Feature Extraction for Robust Crack Monitoring Using Passive Wireless RFID Antenna Sensors

et al. 2018

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“…The power transfer performance depends on the equivalent impedance of the secondary circuit to that of the primary circuit at the resonant frequency. 37,38 When the equivalent impedance of the secondary circuit is larger than that of the primary circuit, the power transfer efficiency is higher. Hypothetically, the resonant frequencies are the same in both series and parallel secondary circuit configurations.…”

Section: Theoretical Analysismentioning

confidence: 99%

Investigation of magnetic resonance coupling circuit topologies for wireless power transmission

Wang

Leach

Lim

et al. 2019

Micro & Optical Tech Letters

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Magnetic resonance coupling circuits have four general topologies; however, there is a lack of comprehensive theoretical analysis with experimental verification for each of these topologies regarding their attractiveness for wireless power transfer (WPT). This article provides this for each of the four topologies to fully understand their differences and allow the selection of the most appropriate type based on system requirements. In addition, a problem associated with the resonance coupling method is the phenomenon of frequency splitting, which can lead to a high‐power transfer efficiency but low‐load power at the resonant frequency. Reasons for frequency splitting and methods of circumventing the problem will be illustrated in this article. Of the four topologies, the series‐parallel (SP) (input‐output) circuit configuration is the most efficient for the realization of a WPT system with a large load impedance, in terms of achieving both a high power transfer efficiency and high‐load power.

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“…Indirect-fed link. The typical topology of SCMR is composed of four coils: two in the transmitter and two in the receiver [10]. All of them are not connected by cables but they interact with magnetic fields.…”

Section: Fundamentals Of Strongly-coupled Magnetic Resonant Systemsmentioning

confidence: 99%

“…Alternatively, the driver and the load loop are usually connected to a lumped capacitor to ensure the operation under resonant conditions. This reactive element could be connected to the coil in parallel or in series but the most popular connection is in series [10]. This type of connection will lead to an equivalent circuit as shown in Figure 2.…”

Section: Figurementioning

confidence: 99%

A Review on the Fundamentals and Practical Implementation Details of Strongly Coupled Magnetic Resonant Technology for Wireless Power Transfer

Triviño-Cabrera

Aguado

2018

Energies

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Users are increasing their demands on the home appliances they utilize by requiring them to be powered anywhere and anytime. In order to satisfy this need, wireless power transfer helps transfer energy between objects without conductors. For domestic scenarios, strongly magnetic resonant technology offers a method to enable wireless power transfer, even when there exist intermediate non-metallic objects between the wireless power source and the load. This paper reviews this technology with a comprehensive explanation about its fundamentals and physical principles. Some practical issues are also analyzed in this work. Particularly, how the control can be designed and how the coils are built. Finally, this paper also addresses the study about the features of other technologies to power home appliances without conductors. They can be foreseen as the technological competitors of strongly coupled magnetic resonant systems.

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Low-power near-field magnetic wireless energy transfer links: A review of architectures and design approaches

Cited by 41 publications

References 174 publications

Feature Extraction for Robust Crack Monitoring Using Passive Wireless RFID Antenna Sensors

Feature Extraction for Robust Crack Monitoring Using Passive Wireless RFID Antenna Sensors

Investigation of magnetic resonance coupling circuit topologies for wireless power transmission

A Review on the Fundamentals and Practical Implementation Details of Strongly Coupled Magnetic Resonant Technology for Wireless Power Transfer

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