Optimizing the Power Output for a Capacitive Wireless Power Transfer System with $N$ receivers

Minnaert, Ben; Mastri, Franco; Costanzo, Alessandra; Mongiardo, M.; Stevens, Nobby

doi:10.1109/wptc45513.2019.9055678

Cited by 5 publications

(4 citation statements)

References 8 publications

(14 reference statements)

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“…According to that, the system efficiency can be enhanced by adding more transmitters. On the other side, CPT with multiple receivers are carried out with an optimum load determination [302][303][304], electric vehicle charging applications [305], conveyors [306], using mixed resonant topology [307], integrated circuits applications [216], and also portable device charging applications [171]. The main purpose is to charge multiple receivers at once with maximum efficiency using a single transmitter.…”

Section: ) Multiple Transmitters/receiversmentioning

confidence: 99%

“…• Increased power density [62,296] • Increased power transfer capacity [288,293,296] • High efficiency [288,294] • Reduced voltage and current stress [289] • Power transfer ability across the metal object [290] • High tolerance to misalignments [294,295] • Mix switching ability [298] • Relatively low efficiency [62,289] • High occupied space [288,294,295] • Design complexity [290,293,296,298] • Increased cost [294,296] Multiple transmitters/ receivers • Reduced charging time for receivers [171,302,[304][305][306][307] • Charging multiple receivers at once [171,302,[304][305][306][307] • Power maximization [304,309] • Efficiency maximization [301,302] • High tolerance to parameter variations [171,305,307] • High tolerance to misalignments [301,306] • High mobility and range ability…”

Section: Rotarymentioning

confidence: 99%

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A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

et al. 2022

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Capacitive power transfer (CPT) technology is becoming increasingly popular in various application areas. Due to its limitations, such as low frequency, low coupling capacitance, and the high voltage stress on metal plates, the studies on high power CPT applications fell behind previously. Therefore, the wideband gap (WBG) semiconductor devices and the compensation topologies are further adopted to tackle these limitations. The main purpose of the paper is to review CPT applications in terms of performance parameters, advantages, disadvantages and also challenges. Initially, the basic principles of CPT technology are examined, which cover compensation topologies, coupler structures, transfer distance, power electronic components, and system control methods. Then, CPT applications are evaluated for performance parameters (i.e., power level, operation frequency, system efficiency, transfer distance) along with compensation types, inverter types, and coupler types. The applications are categorized into six main groups according to industrial topics as safety, consumer electronics, transport, electric machines, biomedical, and miscellaneous. Herein, power level changes from µW to kW ranges, the operation frequency varies from 100s of kHz to 10s of MHz ranges as well. The maximum system efficiency is recorded as 97.1 %. The transfer distance varies from µm range to 100s of mm ranges. The full-bridge inverter topology and four-plate coupler structure are noticeable in CPT applications. Finally, advantages, disadvantages, and challenges of CPT applications are evaluated in detail. This review is expected to serve as a reference for researchers who study on CPT systems and their applications.INDEX TERMS Capacitive power transfer, capacitive coupling, wireless power transfer.MEHMET ZAHID EREL was born in Sakarya, Turkey. He received the B.S. degree in electrical engineering from the Yildiz Technical University, Istanbul, Turkey, in 2013, and the M.S. degree in electronics and communication engineering from the Ankara Yildirim Beyazit University, Ankara, Turkey, in 2016. He is currently pursuing the Ph.D. degree with the department of electrical and electronics engineering,

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Section: ) Multiple Transmitters/receiversmentioning

confidence: 99%

Section: Rotarymentioning

confidence: 99%

A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

et al. 2022

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“…The modular design may be approached differently with the objective to maximize the transferred power from the Tx to Rx. In [34] Minnaert et al propose a system that places less requirement on the Tx side making the received power maximization on the Rx side as shown in Fig. 3.…”

Section: B Capacitive Wptmentioning

confidence: 99%

RF Systems Design for Simultaneous Wireless Information and Power Transfer (SWIPT) in Automation and Transportation

et al. 2021

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“…Cost, losses and alignment behavior of distributed sensor networks can be improved [3]. In wireless charging applications [4,5], when transferring energy through a track [6][7][8], and in fixed [9] and rotating assemblies [10][11][12][13] CPT provides the implementation of a lightweight, cost-effective and alignment insensitive solution, when compared to IPT. Thus, CPT has found its way into JESTPE-2022-02-0181 various energy transfer systems, for example for drones [14,15], robots [16], EVs [17][18][19][20], railway, maritime, and aviation applications [21][22][23][24].…”

mentioning

confidence: 99%

Improved Capacitive Power Transfer With Non-Resonant Power Transfer Link Using Radio Frequency Push-Pull Inverter

Amler¹,

Weitz²,

März³

2022

IEEE J. Emerg. Sel. Topics Power Electron.

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In recent years, research on Wireless Power Transfer and Switched-Mode Power Supplies with a capacitive coupling link has been on the rise. Whereas many researchers investigate resonant coupling links, often resulting in tough requirements for the involved inductors, this paper focuses on the elimination of all inductive components in the coupling link and the rectifier through the use of a non-resonant capacitive link. We propose a converter with a resonant single-ended push-pull inverter operating at radio frequencies of e.g. 13.56 MHz to directly drive the non-resonant capacitive power transfer link. The ability of the converter to operate at a high frequency and to facilitate a significant voltage change across the link capacitors improves the power transfer characteristics of the system compared to previously published systems with a non-resonant capacitive link. Said combination is also beneficial for the transient behavior, parameter variation robustness, an easy design process, simplified drive requirements, and a predictable and limited capacitor voltage stress. The presented converter transmits 122.9 W across an effective link capacitance of 120 pF, leading to the highest input voltage-normalized power transfer to link capacitance value of 13.7 W/(nF‧V) among previously published capacitive power transfer systems with a non-resonant link.

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Optimizing the Power Output for a Capacitive Wireless Power Transfer System with $N$ receivers

Cited by 5 publications

References 8 publications

A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

A Comprehensive Review on Wireless Capacitive Power Transfer Technology: Fundamentals and Applications

RF Systems Design for Simultaneous Wireless Information and Power Transfer (SWIPT) in Automation and Transportation

Improved Capacitive Power Transfer With Non-Resonant Power Transfer Link Using Radio Frequency Push-Pull Inverter

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