Existence of Lossy Objects through Power Transmission Path of Resonator-Coupled Type Wireless Power Transfer System

Norodin, Nur Syafiera Azreen; Hotta, Masao; Nakamura, Kousuke

doi:10.1109/apmc47863.2020.9331646

Cited by 1 publication

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This paper supplements and extends the two International Conference Proceedings [20], [21] with the additional experimental data and further discussions.…”

Section: Introductionsupporting

confidence: 52%

“…Here, the electric energy is stored inside the capacitor itself, indicating that reducing the electric field leakage from the resonator might realize an insensitive system against lossy objects. Although the simple spiral resonator with a capacitor and the dual-spiral resonator have the same mechanism of the loss reduction, our dual-spiral resonator has no lumped elements such as the capacitors; instead, the separation x between the resonators provides the capacitance component of the dual-spiral resonator, which is to be increase such that the electric field vector of the resonator lies in the spiral surface and the electric energy is confined in the resonator [20], [21]. Therefore, the RC-WPT system with dual-spiral resonators is expected to be less sensitive to lossy medium than the RC-WPT system with conventional single-spiral resonators.…”

Section: Configuration Setup For Rc-wpt Systemmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Lossy Mediums for Resonator-Coupled Type Wireless Power Transfer System using Conventional Single- and Dual-Spiral Resonators

Norodin

Nakamura

Hotta

2022

IEICE Trans. Electron.

Self Cite

View full text Add to dashboard Cite

To realize a stable and efficient wireless power transfer (WPT) system that can be used in any environment, it is necessary to inspect the influence of environmental interference along the power transmission path of the WPT system. In this paper, attempts have been made to reduce the influence of the medium with a dielectric and conductive loss on the WPT system using spiral resonators for resonator-coupled type wireless power transfer (RC-WPT) system. An important element of the RC-WPT system is the resonators because they improve resonant characteristics by changing the shape or combination of spiral resonators to confine the electric field that mainly causes electrical loss in the system as much as possible inside the resonator. We proposed a novel dual-spiral resonator as a candidate and compared the basic characteristics of the RC-WPT system with conventional single-spiral and dual-spiral resonators. The parametric values of the spiral resonators, such as the quality factors and the coupling coefficients between resonators with and without a lossy medium in the power transmission path, were examined. For the lossy mediums, pure water or tap water filled with acryl bases was used. The maximum transmission efficiency of the RC-WPT system was then observed by tuning the matching condition of the system. Following that, the transmission efficiency of the system with and without lossy medium was investigated. These inspections revealed that the performance of the RC-WPT system with the lossy medium using the modified shape spiral resonator, which is the dual-spiral resonator proposed in our laboratory, outperformed the system using the conventional single-spiral resonator.

show abstract

“…This paper supplements and extends the two International Conference Proceedings [20], [21] with the additional experimental data and further discussions.…”

Section: Introductionsupporting

confidence: 52%

Section: Configuration Setup For Rc-wpt Systemmentioning

confidence: 99%