Coupling-Independent Capacitive Wireless Power Transfer Using Frequency Bifurcation

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

doi:10.3390/en11071912

Cited by 9 publications

(6 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering coupling capacitance variations, frequency bifurcation approach in control methods [175], quasisliding mode control [176], hybrid control [177] are suggested in CPT systems. The frequency bifurcation approach provides coupling-independent operation, and hence relatively constant efficiency and power transfer.…”

Section: ) System Control Structuresmentioning

confidence: 99%

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

et al. 2022

View full text Add to dashboard Cite

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,

show abstract

Section: ) System Control Structuresmentioning

confidence: 99%

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

et al. 2022

View full text Add to dashboard Cite

show abstract

“…For transport charging applications, CPT was proposed to charge on-road vehicles [8], maritime vessels [9], [10], [11], and unmanned maritime vehicles [12], [13]. In the literature, many papers have reviewed different perspectives on CPT investigating converter topologies, compensation circuits, and structures [3], [4], [14], [15], [16], [17]. However, this paper focuses on surveying a number of published experimental works over the last decade while also discussing the theoretical and practical considerations, challenges, and limitations of designing a CPT system.…”

Section: Introductionmentioning

confidence: 99%

Design Considerations of Capacitive Power Transfer Systems

et al. 2023

View full text Add to dashboard Cite

Capacitive power transfer (CPT) is a near-field wireless power transfer (WPT) technology that has attracted attention in different charging applications. By utilizing electric fields, CPT gives charging systems advantages in terms of cost, weight, flexibility, and mobility. This paper surveys a number of empirical published works in a period between 2015 and 2023. Additionally, it discusses theoretical and practical design considerations of a CPT system to understand and improve the technology and its applications. The paper studies the one-and two-port measuring approaches using vector network analyzers to determine the coupling parameters and compares the measurements to the simulated values using COMSOL Multiphysics © . The two-port approach gives more accurate results than the one-port approach. The paper designs and tests a 13.56 MHz CPT system using the two-port measurement results. The system transfers 100 W at 87.4% efficiency and 30 mm separation distance. Lastly, the paper discusses the design limitations and challenges of the CPT systems, aiming to emphasize the design obstacles that can drive the advancement of the CPT systems for wireless charging applications.INDEX TERMS Wireless power transmission, capacitive power transfer, couplings, VNA, two-port.

show abstract

“…Compared to the traditional plug-in charger, the wireless power transfer (WPT) technique possesses the advantages of convenience, safety, and isolation [1,2]. The inductive power transfer (IPT) technique [3][4][5] and capacitive power transfer (CPT) technique [6][7][8] are two main solutions of WPT. The coupler of IPT is two physically separated coils of a loosely coupled transformer.…”

Section: Introductionmentioning

confidence: 99%

A Novel Compensation Circuit for Capacitive Power Transfer System to Realize Desired Constant Current and Constant Voltage Output

et al. 2022

View full text Add to dashboard Cite

Capacitive power transfer (CPT) technique possesses the advantages of safety, isolation, low cost, and insensitivity to conductive barriers. To charge lithium-ion batteries, CPT should possess the output profile consisting of first constant current (CC) output and later constant voltage (CV) output. To fulfill the output profile, many power switches or compensation components are added in the CPT circuit, which is not expected due to the bulky size and additional losses. To reduce the redundancy of the CPT system, an Lx-PS CPT circuit with only five compensation components is proposed in this paper. After a systematic analysis and a parameter design procedure, the proposed CPT circuit can realize input ZPA at both CC and CV modes. In addition, the output current at CC mode and the output voltage at CV mode are all adjustable based on the charging demands of different loads. Finally, simulations are done to prove the analysis in this paper. Compared to previous research, the CPT circuit proposed in this paper can not only achieve the charging demands of lithium-ion batteries, but also reduce the redundancy of the whole system.

show abstract

Coupling-Independent Capacitive Wireless Power Transfer Using Frequency Bifurcation

Cited by 9 publications

References 31 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

Design Considerations of Capacitive Power Transfer Systems

A Novel Compensation Circuit for Capacitive Power Transfer System to Realize Desired Constant Current and Constant Voltage Output

Contact Info

Product

Resources

About