Capacitive Power Transfer Through a Conformal Bumper for Electric Vehicle Charging

Dai, Jufeng; Ludois, Daniel C.

doi:10.1109/jestpe.2015.2505622

Cited by 161 publications

(49 citation statements)

References 19 publications

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“…Array coil [67] MIMO-coils [80] Four-coils [15, 62-64, 81, 111-115] Dual Tx & Rx [83] Domino coil [66] Five-coils [119] Two-coils [12,[116][117][118] LC-LC circuit [82] SIMO-coils [120] Conformal bumper [124] Single-switch-Single-diode [84 ] Double-Sided LCLC [85] Parallel discs [122,123] Hexagonal cell array [131] Matrix charging pad [130] Single plate [125][126][127][128][129] Two flat rectangular Tx-Rx [87] Single Tx-single Rx [33,69,[91][92][93][94][95][96][97][98][99][100][101][102][103][104][105] Multi-Rx [76,106] Rectangular [78] MRC CC Circular [78] Hexagonal [78] YZ & XZ plane [121] Single ...…”

Section: Wpt Icmentioning

confidence: 99%

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

et al. 2017

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Abstract:Traditional power supply cords have become less important because they prevent large-scale utilization and mobility. In addition, the use of batteries as a substitute for power cords is not an optimal solution because batteries have a short lifetime, thereby increasing the cost, weight, and ecological footprint of the hardware implementation. Their recharging or replacement is impractical and incurs operational costs. Recent progress has allowed electromagnetic wave energy to be transferred from power sources (i.e., transmitters) to destinations (i.e., receivers) wirelessly, the so-called wireless power transfer (WPT) technique. New developments in WPT technique motivate new avenues of research in different applications. Recently, WPT has been used in mobile phones, electric vehicles, medical implants, wireless sensor network, unmanned aerial vehicles, and so on. This review highlights up-to-date studies that are specific to near-field WPT, which include the classification, comparison, and potential applications of these techniques in the real world. In addition, limitations and challenges of these techniques are highlighted at the end of the article.

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Section: Wpt Icmentioning

confidence: 99%

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

et al. 2017

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“…In this design, the coupling capacitance and switching frequency should be large enough to realize significant power transfer and avoid discontinuous working mode. For example, when the coupling capacitance increases to 24 nF and the switching frequency is 200 kHz, the sepic converter realizes more than 1 kW power transfer with 90.3% DC-DC efficiency [38].…”

Section: Pwm Converter Based Topologymentioning

confidence: 99%

“…In addition, since the soft-switching condition can be further realized in a power amplifier, the system efficiency can be maintained at a high level. This circuit topology has been applied in vehicle charging applications, in which a conformal bumper is installed in front of a vehicle to form capacitances with the charging pad [38]. When the switching frequency is 530 kHz, the system can achieve 1 kW power transfer with a DC-DC efficiency as high as 92%.…”

Section: Power Amplifier Based Topologymentioning

confidence: 99%

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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“…Dai and Ludois proposed a conformal transmitter bumper that moulds itself when the vehicle is aligning with transmitter [29]. They achieved high coupling capacitance by minimizing the air gap thereby confining the field between the plates during charging.…”

Section: Capacitive Cptmentioning

confidence: 99%

Review on Contactless Power Transfer for Electric Vehicle Charging

Ravikiran

Keshri

2017

Energies

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Abstract:For the past few years the feasibility of contactless power transfer (CPT) is being explored extensively as a future solution for charging electric vehicles (EVs). Studies report that the main obstacles in CPT are low power efficiency, misalignment tolerance, cost, range and charging time anxiety. This paper presents a review based on existing literature of the CPT systems for EV charging. Different cases of CPT technologies, their principle of operation and equivalent circuit based analysis is carried out. A discussion on compensation strategies and their effectiveness are reviewed and discussed. The design of coil systems for some city electric cars has been referenced in general. At the end recommendations and conclusions are made based on the study and analysis of the information available in literature.

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Capacitive Power Transfer Through a Conformal Bumper for Electric Vehicle Charging

Cited by 161 publications

References 19 publications

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

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

Review on Contactless Power Transfer for Electric Vehicle Charging

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