Quasi-wireless capacitive energy transfer for the dynamic charging of personal mobility vehicles

Neste, C. W. Van; Phani, Arindam; Hull, Richard W.; Hawk, J. E.; Thundat, Thomas

doi:10.1109/wow.2016.7772091

Cited by 15 publications

(7 citation statements)

References 8 publications

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“…Moreover, the discussion on the dynamic CPT system provides a new application area of the CPT technology, which is also an important development direction in future research. In Figure 30, a long track of metal plates is used as the power transmitter, and the receivers are made by relatively small plates [83,115]. In the practical applications, there are several challenges that need to be considered: high power implementation, dynamic transition process, and the stand-by power loss.…”

Section: Resultsmentioning

confidence: 99%

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A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

2017

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Capacitive power transfer (CPT) technology is an effective and important alternative to the conventional inductive power transfer (IPT). It utilizes high-frequency electric fields to transfer electric power, which has three distinguishing advantages: negligible eddy-current loss, relatively low cost and weight, and excellent misalignment performance. In recent years, the power level and efficiency of CPT systems has been significantly improved and has reached the power level suitable for electric vehicle charging applications. This paper reviews the latest developments in CPT technology, focusing on two key technologies: the compensation circuit topology and the capacitive coupler structure. The comparison with the IPT system and some critical issues in practical applications are also discussed. Based on these analyses, the future research direction can be developed and the applications of the CPT technology can be promoted.

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Section: Resultsmentioning

confidence: 99%

“…The recent study also shows that it has a good tolerance to large misalignment, which is named as a single-wire CPT system [82,83]. In addition, experiments show that effective power transfer can be achieved by two plates even when their parasitic capacitances with the ground are extremely small.…”

Section: Two-plate Structurementioning

confidence: 99%

A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

2017

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“…According to that, it can be applied in both indoor and outdoor CPT applications. Neste et al suggest a large surface quasi-wireless application [76,77]. Thus, the system cost is reduced using inexpensive surfaces to transfer power.…”

Section: Proposed Developments In Literaturementioning

confidence: 99%

“…The vehicle side includes the power receiver plate connected with the compensation network and rectifier with a battery. Dynamic wireless charging applications can be categorized as capacitive coupler-based studies [77,[233][234][235]] and roadway investigation-based studies [80,81,[236][237][238] in CPT systems. The reduction of electric field emissions is emphasized on coupler-based studies.…”

Section: Dynamic Chargingmentioning

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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“…But also the configuration with multiple transmitters and one receiver can be of interest. An example is the charging of electric vehicles while driving: multiple transmitter plates in the road could charge a driving vehicle which contains the receiver plate [1], [5], [6]. To our knowledge, a set-up with multiple transmitters for capacitive wireless power transfer (CPT) has not yet been described.…”

Section: Introductionmentioning

confidence: 99%

Power maximization for capacitive wireless power transfer with two transmitters and one receiver

Minnaert

Stevens

2018

2018 IEEE MTT-S International Wireless Symposium (IWS)

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Inductive wireless power transfer from multiple transmitters to a single receiver has already been studied. However, for capacitive power transfer, an analysis of a multi transmitter setup has not yet been performed, even though useful applications are being developed for this technology. In this work, we determine the optimal solution for a capacitive wireless power transfer system in order to maximize the power transfer from two transmitter sources to a single load at the receiver side. As well the case for uncoupled as coupled transmitters is solved. We find that for the uncoupled configuration, a purely resistive load optimizes the system, whereas for the coupled configuration, a susceptance has to be inserted to maximize the power transfer. We confirm our results by circuit simulations.

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Quasi-wireless capacitive energy transfer for the dynamic charging of personal mobility vehicles

Cited by 15 publications

References 8 publications

A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

A Review on the Recent Development of Capacitive Wireless Power Transfer Technology

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

Power maximization for capacitive wireless power transfer with two transmitters and one receiver

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