Multiobjective Parameter Optimization of a Four-Plate Capacitive Power Transfer System

Wu, Xingyang; Su, Yugang; Hu, Aiguo Patrick; Qing, Xiaodong; Hou, Xinyu

doi:10.1109/jestpe.2020.2979990

Cited by 20 publications

(4 citation statements)

References 32 publications

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“…2 presents the schematic of a WPT system with the proposed coupler. The coupler comprises four concentric electrodes (#1, #1 ′ , #2, and #2 ′ ), forming a well-known 𝜋-type equivalent circuit [5,7]. When the cross-coupling capacitances between #1 and #2 ′ as well as #1 ′ and #2 are small, the coupling coefficient can be approximated using (1) [11,12].…”

Section: D-functional Capacitive Couplermentioning

confidence: 99%

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Capacitive Wireless Power Transfer System with a 3D-Functional Coupler for Maintenance-Free Industrial Robots

Naka,

Ishiwata,

Shibata

et al. 2024

IEICE Commun. Express

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This paper presents a capacitive wireless power transfer system that employs a three-dimensional (3D)-functional coupler for obtaining maintenance-free industrial robots. To enhance the vital coupling coefficient of the coupler within a confined space, such as a rotary joint, we fabricated a 3D capacitive coupler. Additionally, by employing polytetrafluoroethylene (PTFE) resin with a high Q factor for electrode fixation, a theoretical maximum efficiency of 99.3% was achieved. Finally, we designed a system that successfully produced a transmission of 5.76 W with a total DC-DC efficiency of 73.0% at 13.56 MHz and an arm chuck operations utilizing both power and pneumatic pressure.

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Section: D-functional Capacitive Couplermentioning

confidence: 99%

“…Capacitive couplers comprising thin electrodes and offering low leakage have garnered attention across diverse applications [4,5,6,7,8,9,10,11]. Such couplers permit substitution of metal shields with resin surrounding the electrodes, facilitating the fabrication of lightweight rotary joints.…”

Section: Introductionmentioning

confidence: 99%

Capacitive Wireless Power Transfer System with a 3D-Functional Coupler for Maintenance-Free Industrial Robots

Naka,

Ishiwata,

Shibata

et al. 2024

IEICE Commun. Express

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“…Thus, the horizontal structure is more sensitive to misalignments. Besides, the port capacitance term is proposed to derive the cross-coupling capacitors in modeling of the coupler [56,95]. The modeling of the coupling interface is presented based on the coupling coefficient term [96][97][98].…”

Section: Proposed Developments In Literaturementioning

confidence: 99%

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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“…In this review, the coupling mechanism of the CPT system is classified according to three criteria: the number of metal plates, the space layout of the plates, and the shape of the plates. Regarding the number of metal plates, the coupling mechanism can be divided into a two-plate structure [15], four-plate structure [16][17][18][19][20][21], six-plate structure [22,23], etc. The four-plate structure is most commonly used to form a current loop for the capacitive power transfer.…”

Section: Cpt Coupler Designmentioning

confidence: 99%

Research and Application of Capacitive Power Transfer System: A Review

Wang

Zhang

et al. 2022

Electronics

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Capacitive power transfer (CPT) uses an electric field as the transfer medium to achieve wireless power transfer (WPT). Benefitting from the low eddy current loss, simple system structure and strong plasticity of the coupling coupler, the CPT system has recently gained much attention. The CPT system has significantly improved transfer power, system efficiency, and transfer distance due to continuous research and discussion worldwide. This review briefly presents the basic working principle of the CPT system and summarizes the theoretical research in four aspects, including coupling coupler and high-frequency power converter. Following this, the review focuses on research in six key directions, including system modelling and efficiency optimization. The application of CPT technology in five fields, including medical devices and transportation, is also discussed. This review introduces the progress of CPT research in recent years, hoping to serve as a reference for researchers, to promote the further research and application of the CPT system.

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Multiobjective Parameter Optimization of a Four-Plate Capacitive Power Transfer System

Cited by 20 publications

References 32 publications

Capacitive Wireless Power Transfer System with a 3D-Functional Coupler for Maintenance-Free Industrial Robots

Capacitive Wireless Power Transfer System with a 3D-Functional Coupler for Maintenance-Free Industrial Robots

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

Research and Application of Capacitive Power Transfer System: A Review

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