High-Efficiency Multiphase Capacitive Power Transfer in Sliding Carriages With Closed-Loop Burst-Mode Current Control

Dai, Jufeng; Hagen, Skyler; Ludois, Daniel C.

doi:10.1109/jestpe.2018.2845385

Cited by 18 publications

(6 citation statements)

References 36 publications

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“…Conversely, the three-phase structure is not still as sufficient as it should be. Contactless CPT is achieved between stationary and rotating parts by utilizing the capacitance of the linear bearings [32,269]. A threephase structure is applied to rotary applications using e-GaN FETs [270].…”

Section: ) Three-phasementioning

confidence: 99%

“…• Increased power transfer capacity [32,269,271] • High efficiency [269,271] • Reduced voltage stress [269] • High tolerance to parameter variations [270] • High frequency ability [270] • High tolerance to misalignments [271] • More influence of parasitic components [32,270] • Control complexity [269] • High occupied space [271]…”

Section: • Increased Power Transfer Capacity [42]mentioning

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: ) Three-phasementioning

confidence: 99%

Section: • Increased Power Transfer Capacity [42]mentioning

confidence: 99%

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

et al. 2022

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“…The extra Although the optimal equivalent resistance against the load variations can be achieved via tracking the maximum power point, it requires an additional circuit which increases the component counts, cost, and loss to the system. The primary side control technique is presented in [25]- [29]. The class E inverter is adopted in [25] and [26].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, wireless communication between primary and secondary side is required in [27] and [28] to control the activeclamped half-bridge (ACHB) inverter and full-bridge inverter, respectively. A three-phase bridge inverter is used in the primary circuit [29]. The burst-mode current control is adopted to regulate the dc output current.…”

Section: Introductionmentioning

confidence: 99%

Primary side control technique for capacitive power transfer system without any wireless feedback

Nutwong,

Hatchavanich,

Sangswang

et al. 2024

IJPEDS

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The output voltage of capacitive power transfer (CPT) system will change if the load resistance is varied. This paper presents a method to regulate the output voltage using a controller that is located on the primary side, known as the primary side control technique. It does not require any additional components and wireless feedback, which lowers the cost and complexity of CPT system compared to the conventional control technique. Instead of directly measuring the output voltage on secondary side, it is estimated through the measured capacitor voltage on primary side. Modified sine wave control of the full-bridge inverter is adopted to regulate the output voltage. The proposed control technique is validated by the simulation via PSIM software using the practical parameters of capacitive coupler presented in the literature. Simulation results of the output voltage control against the step change in desired output voltage and load resistance indicate the performance of proposed control technique.

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“…The performance is enhanced by applying a high-frequency power supply, additionally resonance techniques can be employed [3,4]. Gallium-Nitride (GaN) transistors are emerging in WPT applications, since switching frequencies in the range of several MHz are realized compactly and efficiently [5,6].…”

Section: Introductionmentioning

confidence: 99%

Coupled design approach for an integrated GaN-based wireless power transfer rotating system

Bastiaens

Krop

Curti

et al. 2021

JAE

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This paper concerns the design of a high-frequency GaN-based rotating transformer confined by conductive materials. The design approach combines the high-order spectral element method for the magnetic modeling, an electronic circuit model, and the finite element method for the thermal modeling. The objective of the design analysis is to minimize the ratio of core inertia to efficiency. Two different transformer topologies are considered, in which the power is either transferred in the axial or radial direction. The resulting designs are compared in terms of efficiency, core inertia, and transferred power. The radial design shows the best performance within the optimization problem.

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High-Efficiency Multiphase Capacitive Power Transfer in Sliding Carriages With Closed-Loop Burst-Mode Current Control

Cited by 18 publications

References 36 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

Primary side control technique for capacitive power transfer system without any wireless feedback

Coupled design approach for an integrated GaN-based wireless power transfer rotating system

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