Analysis and experimental study of wireless power transfer with HTS coil and copper coil as the intermediate resonators system

Wang, Xiufang; Nie, Xinyi; Liang, Yilang; Lu, Falong; Yan, Zhongming; Wang, Yu

doi:10.1016/j.physc.2016.11.006

Cited by 18 publications

(10 citation statements)

References 9 publications

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“…As the gap length varies, the resonance coupling between the coils changes, which introduces power losses and therefore thermal losses to be compensated by the cooling system. An higher transfer efficiency, when using HTS resonator coils compared to copper coils, was reported in [129]. A study conducted by Inoue et al investigated the impact of low-frequency operation on the power transfer efficiency [130].…”

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confidence: 99%

A critical review on wireless charging for electric vehicles

Machura

2019

Renewable and Sustainable Energy Reviews

204

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Electric vehicles (EVs) have recently been significantly developed in terms of both performance and 10 drive range. There already are various models commercially available, and the number of EVs on road 11 increases rapidly. Although most existing EVs are charged by electric cables, companies like Tesla, 12 BMW and Nissan have started to develop wireless charged EVs that don't require bulky cables. 13 Rather than physical cable connection, the wireless (inductive) link effectively avoids sparking over 14 plugging/unplugging. Furthermore, wireless charging opens new possibilities for dynamic chargingcharging while driving. Once realised, EVs will no longer be limited by their electric drive range and the requirement for battery capacity will be greatly reduced. This has been prioritised and promoted worldwide, particularly in UK, Germany and Korea. This paper presents a thorough literature review on the wireless charging technology for EVs. The key technical components of wireless charging are summarised and compared, such as compensation topologies, coil design and communication. To enhance the charging power, an innovative approach towards the use of superconducting material in coil designs is investigated and their potential impact on wireless charging is discussed. In addition, health and safety concerns about wireless charging are addressed, as well as their relevant standards. Economically, the costs of a wide range of wireless charging systems has also been summarised and compared.

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confidence: 99%

A critical review on wireless charging for electric vehicles

Machura

2019

Renewable and Sustainable Energy Reviews

204

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“…Recently, many papers about WPT have been published, and various products have been examining and commercializing. For example, studies such as examination of design of coils [9][10][11][12] and comparison of efficiency by change of applied voltage waveform [13,14], are investigating. As products, WPT system is applied for power supply on various fields, for instance mobile devices and IoT [15], vehicles traveling on the road [16][17][18][19], and micro implant devices [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Wireless power transfer using multiple-transmitters for high stability for position

Onishi¹,

Yamaguchi²,

Iida³

2020

IJECE

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The aim of this study is to optimize the system in the wireless power supply using multiple transmitters by algebraically analyzing the effects of both a circuit parameters and an axis displacement, etc. In addition to these analyses, the other aim is designing, producing and evaluating wireless charger with high stability for position. In the proposed method, we analyzed the situation in which three transmitters are used as power sources. It is turned out that the optimum arrangement of three transmitters is equilateral triangular from Biot-Savart law and circuit equation. In the experiment, transmitted power is measured when the receiver is moved on the vertical plane in regard to central axis of coils. It is confirmed that 4~4.5mW is transmitted at the face-to-face of transmitters and 2.4mW is transmitted at the center of transmitters.

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“…The problem with the near field is highly dependent on the distance between the transmitter and receiver coil. The effort to prolong the transmission is by adding a receiver or node [17] [26]. The objective of this paper is to investigate the impact of node distance for the WET system.…”

Section: Introductionmentioning

confidence: 99%

The impact of Nodes Distance on Wireless Energy Transfer System

Risma

Dewi

Oktarina

2020

KINETIK

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Wireless energy transfer (WET) reemerges as the method for transmitting electric power without the necessity to deal with cable losses and an aesthetically pleasing environment. The problem with WET is how to maintain magnetic induction as the distance gets further. This paper investigates the impact of nodes distance on the WET system. The experimental results show that the most effective distance among transmitter, nodes, and receiver are 4 cm. The measurement is taken with and without load. The without load application give that for node 1; the results are 6 V, 110 mA, and 2.85 mT for voltage, current, and magnetic flux, respectively. At the application of 2 nodes, the voltage is 6.8 V, the current is 0.124 mA, and the magnetic flux is 3.83 mT, and at three nodes installation, it is 7 V, 134 mA, and 3.83 mT. During the application of 3-Watt and 5-Watt lamp, at 4 cm distance, the power received is 1.66 W and 3.66 W at 3-Watt and 5-Watt lamp for one node, 1.84 W, and 3.84 for two nodes, and 1.93 W and 3.93 for three nodes. The experimental results show that the transmitted signal can be prolonged by installing nodes. Even though this study shows that 4 cm is the most effective, it is possible to increase up to 20 cm to power a 3-Watt lamp and 5-Watt lamp.

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Analysis and experimental study of wireless power transfer with HTS coil and copper coil as the intermediate resonators system

Cited by 18 publications

References 9 publications

A critical review on wireless charging for electric vehicles

A critical review on wireless charging for electric vehicles

Wireless power transfer using multiple-transmitters for high stability for position

The impact of Nodes Distance on Wireless Energy Transfer System

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