Experiments With a Compact Wireless Power Transfer System Using Strongly Coupled Magnetic Resonance and Metamaterials

Corrêa, Diego C.; Resende, Úrsula C.; Bicalho, Fabiano S.

doi:10.1109/tmag.2019.2913767

Cited by 32 publications

(14 citation statements)

References 14 publications

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“…The static permittivity of seawater and the ionic conductivity of seawater are respectively written as (4) and (5), as shown at the bottom of the next page.…”

Section: Theory Analysismentioning

confidence: 99%

“…Wireless power transfer (WPT) system has attracted more and more attentions in recent years, which is developed to deliver power to electrical equipment in different areas, contactlessly. There are two different types of WPT systems: one is capacitive wireless power transfer (CWPT) system [1]- [3], the other is the inductive wireless power transfer (IPT) system [4]- [7]. IPT system transfers the power wirelessly by adapting magnetic field with the inductive coils.…”

Section: Introductionmentioning

confidence: 99%

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Bidirectional Undersea Capacitive Wireless Power Transfer System

Yang

Zhang

2019

IEEE Access

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This paper proposes a bidirectional undersea capacitive wireless power transfer system (BD-UCWPT) for the autonomous underwater vehicles (AUVs). The two H-Bridge circuits are adapted in the proposed BD-UCWPT system to achieve the bidirectional power flow. The H-Bridge circuit is built based on the GaN devices. As a result, the high switching frequency, and low power loss could be reached. The two LCLC compensation networks are respectively used in the transmitter side and receiver side. The simulation work is conducted with the Ansys Maxwell, PSIM and MATLAB. In the experiments, two seawater bags are added in the middle of two metal plates of C S1 and C S2 to model the seawater condition, respectively. In order to verify the theory analysis, a 100W experimental BD-UCWPT system is constructed. The experiments have been conducted in air and in seawater, respectively. The simulated and experimental results are compared with each other. It shows that, with this BD-UCWPT system, the power of AUVs could flow bidirectionally. The stable operation and high efficiency of BD-UCWPT system is verified. The research work in this paper could facilitate the application of wireless power transfer (WPT) system for AUVs and other undersea devices. INDEX TERMS Wireless power transfer system, bidirectional, undersea, autonomous underwater vehicles (AUVs).

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“…The static permittivity of seawater and the ionic conductivity of seawater are respectively written as (4) and (5), as shown at the bottom of the next page.…”

Section: Theory Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bidirectional Undersea Capacitive Wireless Power Transfer System

Yang

Zhang

2019

IEEE Access

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“…Recent advancements in WPT systems have focused on the deployment of meta-surface 13 – 15 , or metamaterial 17 – 21 . Such meta-surfaces or -materials have negative or near-zero effective permeability or permittivity characteristics that help to improve the coupling between the TX and RX to enhance the performance of the WPT system.…”

Section: Introductionmentioning

confidence: 99%

“…The resulting meta-surface showed enhanced efficiency when utilized as a passive relay in a reference WPT system when compared to that WPT system without meta-surface 15 . In 17 – 21 , further intermediate meta-surface or metamaterials layers with near-zero, negative permeability, or both of them have been exploited to enhance the WPT systems efficiency. Still, current WPT systems based on meta-surface 13 – 15 , or metamaterial 17 – 21 suffer from a reduction of the working distance, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…In 17 – 21 , further intermediate meta-surface or metamaterials layers with near-zero, negative permeability, or both of them have been exploited to enhance the WPT systems efficiency. Still, current WPT systems based on meta-surface 13 – 15 , or metamaterial 17 – 21 suffer from a reduction of the working distance, i.e. the distance between the receiver and the meta-surface itself as can be interpreted from Fig.…”

Section: Introductionmentioning

confidence: 99%

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Wireless power transfer system rigid to tissue characteristics using metamaterial inspired geometry for biomedical implant applications

Pokharel

Barakat

Alshhawy

et al. 2021

Sci Rep

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Conventional resonant inductive coupling wireless power transfer (WPT) systems encounter performance degradation while energizing biomedical implants. This degradation results from the dielectric and conductive characteristics of the tissue, which cause increased radiation and conduction losses, respectively. Moreover, the proximity of a resonator to the high permittivity tissue causes a change in its operating frequency if misalignment occurs. In this report, we propose a metamaterial inspired geometry with near-zero permeability property to overcome these mentioned problems. This metamaterial inspired geometry is stacked split ring resonator metamaterial fed by a driving inductive loop and acts as a WPT transmitter for an in-tissue implanted WPT receiver. The presented demonstrations have confirmed that the proposed metamaterial inspired WPT system outperforms the conventional one. Also, the resonance frequency of the proposed metamaterial inspired TX is negligibly affected by the tissue characteristics, which is of great interest from the design and operation prospects. Furthermore, the proposed WPT system can be used with more than twice the input power of the conventional one while complying with the safety regulations of electromagnetic waves exposure.

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Parseval’s Theorem Used for the Inductor Analysis in High-Frequency Boost Converters

Gutiérrez

Marcault

Alonso

et al. 2020

Lecture Notes in Electrical Engineering

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Advances in GaN-HEMT devices have encouraged the development of power converters at megahertz-level. However, inductors for high-frequency power converters require innovative approaches to overcome challenging constraints in both power and frequency. In this context, this paper presents an extension of the Parseval's theorem for the inductor analysis based on the energy conservation principle in the time and the frequency domains. Our approach aims to provide insights about the inductor power losses using high-frequency parameters and the inductor current harmonics. The proposed approach disaggregates the power losses in the frequency-domain for the inductor power signals in the time-domain. Main findings from the presented methodology provide useful selection criteria for inductors in power converters given parameters of quality factor (Q) and Self Resonance Frequency (SRF ). Simulation results show the impact of the inductor behavior on the switching losses. An experimental setup validates the proposed approach. A high-frequency boost converter is presented as a study case.

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Experiments With a Compact Wireless Power Transfer System Using Strongly Coupled Magnetic Resonance and Metamaterials

Cited by 32 publications

References 14 publications

Bidirectional Undersea Capacitive Wireless Power Transfer System

Bidirectional Undersea Capacitive Wireless Power Transfer System

Wireless power transfer system rigid to tissue characteristics using metamaterial inspired geometry for biomedical implant applications

Parseval’s Theorem Used for the Inductor Analysis in High-Frequency Boost Converters

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