Selection of high transfer stability and optimal power-efficiency tradeoff with respect to distance region for underground wireless power transfer systems

Yu, Xu; Chen, Qili; Tian, Detian; Zhang, Yongquan; Ли, Бо; Tang, Huiming

doi:10.1007/s43236-020-00156-x

Cited by 5 publications

(1 citation statement)

References 27 publications

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“…Wireless power transfer (WPT), as a breakthrough method for charging electronic devices, has drawn a significant deal of attention since Tesla's initial WPT experiment at the beginning of the twentieth century to eliminate constant battery changes and charging using plugs. Magnetic resonance wireless power transfer (MR-WPT) offers several benefits, including long coupling distances, high output power, high transfer efficiency, minimal influence from nonferromagnetic barriers, and minimal impact on the human body [138].…”

Section: Energy Consumption Issuesmentioning

confidence: 99%

Recent Phenomenal and Investigational Subsurface Landslide Monitoring Techniques: A Mixed Review

Ebrahim,

Gomaa,

Zayed

et al. 2024

Remote Sensing

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Landslides are a common and challenging geohazard that may be caused by earthquakes, rainfall, or manmade activity. Various monitoring strategies are used in order to safeguard populations at risk from landslides. This task frequently depends on the utilization of remote sensing methods, which include the observation of Earth from space, laser scanning, and ground-based interferometry. In recent years, there have been notable advancements in technologies utilized for monitoring landslides. The literature lacks a comprehensive study of subsurface monitoring systems using a mixed review approach that combines systematic and scientometric methods. In this study, scientometric and systematic analysis was used to perform a mixed review. An in-depth analysis of existing research on landslide-monitoring techniques was conducted. Surface-monitoring methods for large-scale landslides are given first. Next, local-scale landslide subsurface monitoring methods (movement, forces and stresses, water, temperature, and warning signs) were examined. Next, data-gathering techniques are shown. Finally, the physical modeling and prototype field systems are highlighted. Consequently, key findings about landslide monitoring are reviewed. While the monitoring technique selection is mainly controlled by the initial conditions of the case study, the superior monitoring technique is determined by the measurement accuracy, spatiotemporal resolution, measuring range, cost, durability, and applicability for field deployment. Finally, research suggestions are proposed, where developing a superior distributed subsurface monitoring system for wide-area monitoring is still challenging. Interpolating the complex nonlinear relationship between subsurface monitoring readings is a clear gap to overcome. Warning sign systems are still under development.

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Section: Energy Consumption Issuesmentioning

confidence: 99%

Recent Phenomenal and Investigational Subsurface Landslide Monitoring Techniques: A Mixed Review

Ebrahim,

Gomaa,

Zayed

et al. 2024

Remote Sensing

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Matching network design for input impedance optimization of four-coil magnetic resonance coupling wireless power transfer systems

et al. 2022

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Optimal resonant frequency analysis for underground wireless power transfer with metal tube interference

Chen

Zhang

et al. 2021

AIP Advances

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Magnetic resonant wireless power transfer (MR-WPT) has several advantages over conventional wired underground power supply methods. However, MR-WPT inevitably encounters metal conductors, which reduce the system efficiency through the eddy loss induced in the conductor by high-frequency electromagnetic waves. In this paper, the effect of resonant frequency variations caused by metal tube interference with the aim of maximizing the system efficiency is studied. According to the variation in the resonant frequency, the system efficiency is analytically derived by an equivalent circuit model. Electromagnetic simulations are carried out to further analyze the metal tube interference on the system. The results demonstrate the existence of an optimal resonant frequency that maximizes the system efficiency. Aluminum tube interference produces a lower optimal resonant frequency and higher efficiency than a 304 stainless-steel tube. When the metal tube is slotted, the optimal slot width and number of slots enhance the maximum efficiency and reduce the optimal resonant frequency and frequency drift. With slot widths of 2 and 8 mm, the system efficiency reaches ∼67% at 40.1 kHz and 55% at 48 kHz, respectively. Finally, different types of slotted tubes are fabricated, and the theoretical results are experimentally verified.

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Selection of high transfer stability and optimal power-efficiency tradeoff with respect to distance region for underground wireless power transfer systems

Cited by 5 publications

References 27 publications

Recent Phenomenal and Investigational Subsurface Landslide Monitoring Techniques: A Mixed Review

Recent Phenomenal and Investigational Subsurface Landslide Monitoring Techniques: A Mixed Review

Matching network design for input impedance optimization of four-coil magnetic resonance coupling wireless power transfer systems

Optimal resonant frequency analysis for underground wireless power transfer with metal tube interference

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