Analysis of Relay Effect on Wireless Power Transfer

Zarif, Mahdi; Aliabadi, Hamed; Khaleghi, Sadegh

doi:10.5220/0005539005540557

Cited by 3 publications

(1 citation statement)

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“…Based on the new developments in improving the transfer distance, a new planar design would be able to charge the devices on desks and tables. To address the poor transfer efficiency defects of a two-coil energy transfer mechanism, as considered in [20,23,59], midrange WPT techniques, such as relay resonators [60,61] (Figure 4a), four coils [15,[62][63][64] (Figure 4b), U coils [65] (Figure 4c), domino coils [56,66] (Figure 4d), array coils [67] (Figure 4e), and dipole coils [68] (Figure 4f) are proposed in previous studies and fused into future planar WPT chargers with increased distances or air gaps. Based on these studies, the transfer distances were 20, 60, 100, 180 (for seven resonator coils), 20, and 500 cm ( [60], [15], [65], [66], [67] and [68], respectively).…”

Section: Transfer Distancementioning

confidence: 99%

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

et al. 2017

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Abstract:Traditional power supply cords have become less important because they prevent large-scale utilization and mobility. In addition, the use of batteries as a substitute for power cords is not an optimal solution because batteries have a short lifetime, thereby increasing the cost, weight, and ecological footprint of the hardware implementation. Their recharging or replacement is impractical and incurs operational costs. Recent progress has allowed electromagnetic wave energy to be transferred from power sources (i.e., transmitters) to destinations (i.e., receivers) wirelessly, the so-called wireless power transfer (WPT) technique. New developments in WPT technique motivate new avenues of research in different applications. Recently, WPT has been used in mobile phones, electric vehicles, medical implants, wireless sensor network, unmanned aerial vehicles, and so on. This review highlights up-to-date studies that are specific to near-field WPT, which include the classification, comparison, and potential applications of these techniques in the real world. In addition, limitations and challenges of these techniques are highlighted at the end of the article.

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