Feasibility study of hybrid inductive and capacitive wireless power transfer for future transportation

Vincent, Deepa; Sang, Phuoc Huynh; Williamson, Sheldon S.

doi:10.1109/itec.2017.7993276

Cited by 28 publications

(18 citation statements)

References 19 publications

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“…This implies that our model is only valid for static applications, for example, the charging of space-confined systems, such as low-power consumer applications [12] or three-dimensional integrated circuits [11], for which the receivers have predefined locations. For moving receivers, such as electric vehicles [26], robot arms and in-track-moving systems [12], our model is not valid. For future work, we plan to extend our model by applying distributed elements.…”

Section: Analysis Of the Resultsmentioning

confidence: 99%

Optimal Analytical Solution for a Capacitive Wireless Power Transfer System with One Transmitter and Two Receivers

Minnaert

Stevens

2017

Energies

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Wireless power transfer from one transmitter to multiple receivers through inductive coupling is slowly entering the market. However, for certain applications, capacitive wireless power transfer (CWPT) using electric coupling might be preferable. In this work, we determine closed-form expressions for a CWPT system with one transmitter and two receivers. We determine the optimal solution for two design requirements: (i) maximum power transfer, and (ii) maximum system efficiency. We derive the optimal loads and provide the analytical expressions for the efficiency and power. We show that the optimal load conductances for the maximum power configuration are always larger than for the maximum efficiency configuration. Furthermore, it is demonstrated that if the receivers are coupled, this can be compensated for by introducing susceptances that have the same value for both configurations. Finally, we numerically verify our results. We illustrate the similarities to the inductive wireless power transfer (IWPT) solution and find that the same, but dual, expressions apply.

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Section: Analysis Of the Resultsmentioning

confidence: 99%

Optimal Analytical Solution for a Capacitive Wireless Power Transfer System with One Transmitter and Two Receivers

Minnaert

Stevens

2017

Energies

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“…The available wireless charging technologies are nearfield charging (i.e., inductive charging [44] [54], magneticresonant charging [55] [60], and capacitive charging [61] [65]) and medium-field charging (i.e., magnetic-gear charging) [66], [70]. However, far-field charging technologies (i.e., laser charging [71][77], microwave charging [78] [83], and radio wave charging [84] [89]) are still the subject of extensive research and are expected to represent the future trend in wireless charging technologies…”

Section: Classification Of Wired and Wireless Charging Technologiesmentioning

confidence: 99%

“…Next, wireless charging technologies [44] [89] can be classified into three groups: near-field charging technologies [44] [65], medium-field charging technologies [66] [70], and far-field charging technologies [71] [89]. The first two charging technologies (i.e., nearfield charging [45] [65] and medium-field charging (also referred to as mechanical charging) [66] [70]) are the most dominant and currently used charging technologies for BEVs. The demand for wireless charging technologies is currently increasing each day.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive State-of-the-Art Review of Wired/Wireless Charging Technologies for Battery Electric Vehicles: Classification/Common Topologies/Future Research Issues

2021

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The increasing emissions created by the large-scaled number of automobiles around the world pose severe threats to modern life by causing global warming issues and deteriorating air quality. These serious issues stimulate the essential demand for cleaner, safer, and more efficient vehicles, such as battery electric vehicles (BEVs). Unlike other studies on the charging technologies of BEVs, this paper gives a comprehensive state-of-the-art review on the charging technologies available for BEVs: wired charging and wireless charging technologies. First, the wired charging technologies are systematically classified into AC charging (indirect charging) and DC charging (direct charging) methods based on how the BEVs batteries are fed from the grid. Next, the configurations and commonly used topologies of wireless charging technologies for BEVs are thoroughly discussed. The leading institutes/companies driving advancements in both technologies are also acknowledged. Finally, this paper extensively highlights the recent and future research trends along with the industrial applications. INDEX TERMS AC charging, battery electric vehicles (BEVs), DC charging, off-board charger, on-board charger (OBC), wired charging, wireless charging.

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“…In addition, the integrated coupler can be used to transfer power, which realizes simultaneous power and data transmission [106]. Besides, the inductive and capacitive hybrid system can also be used in other applications, such as remote sensing [107], electric vehicle charging [108], DC-DC converter [109], and electric motor diagnosing [110].…”

Section: Combination Of Ipt and Cpt Technologiesmentioning

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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Feasibility study of hybrid inductive and capacitive wireless power transfer for future transportation

Cited by 28 publications

References 19 publications

Optimal Analytical Solution for a Capacitive Wireless Power Transfer System with One Transmitter and Two Receivers

Optimal Analytical Solution for a Capacitive Wireless Power Transfer System with One Transmitter and Two Receivers

A Comprehensive State-of-the-Art Review of Wired/Wireless Charging Technologies for Battery Electric Vehicles: Classification/Common Topologies/Future Research Issues

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

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