Design of Magnetic Coupler for Wireless Power Transfer

Xu, Heqi; Wang, Chunfang; Dong-wei, Xia; Liu, Yunrui

doi:10.3390/en12153000

Cited by 19 publications

(6 citation statements)

References 17 publications

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“…Receiving side consists of receiver side coil, AC/DC converter, sometime using DC/DC converter to efficiently regulate the DC voltage received to the batteries. The AC high-frequency current at Tx coil produces an alternating magnetic field which in turn generates an induced current in the Rx coil, then a rectifier is used to convert the AC induced current to DC to charge the battery [36].…”

Section: Wpt System For Charging Evsmentioning

confidence: 99%

Investigation on Coil Geometry in WPT Systems for Charging EVs Applications

Elnail

2022

FJES

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This paper investigates different coil geometries for designing wireless power transfer (WPT) system for electric vehicle (EV) applications. the system model depend on the lumped parameters model using series- series (SS) compensation topology is briefly discussed. The investigations adopted on comparing the coupling coefficient using Finite Element method (FEM) software when the two coils are laterally and vertically misaligned. Moreover, investigations comprising the electromagnetic flux density distributions. One turn coreless circular planar and square planar coils are simulated and the results depicted and compared for the same wire length. The results show that the circular coil gained higher coupling coefficient and generates more electromagnetic flux density than the square coil.

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Section: Wpt System For Charging Evsmentioning

confidence: 99%

Investigation on Coil Geometry in WPT Systems for Charging EVs Applications

Elnail

2022

FJES

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“…Currently, the functionality of the e-bike wireless charger has been proved in the laboratory. After this, measurements of the electromagnetic field radiated by the charger are going to be performed to verify the compliance to the International Commission on Non-Ionizing Radiation Protection (ICNIPR) that ensures safety to human beings [55]. The radiated magnetic field of the charger is expected to be within the limits for general public (27 µT) since the coils are placed on top of each other, and there is no gap in the free air.…”

Section: Ongoing Developmentmentioning

confidence: 99%

Sustainable E-Bike Charging Station That Enables AC, DC and Wireless Charging from Solar Energy

et al. 2020

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If electric vehicles have to be truly sustainable, it is essential to charge them from sustainable sources of electricity, such as solar or wind energy. In this paper, the design of solar powered e-bike charging station that provides AC, DC and wireless charging of e-bikes is investigated. The charging station has integrated battery storage that enables for both grid-connected and off-grid operation. The DC charging uses the DC power from the photovoltaic panels directly for charging the e-bike battery without the use of an AC charging adapter. For the wireless charging, the e-bike can be charged through inductive power transfer via the bike kickstand (receiver) and a specially designed tile (transmitter) at the charging station, which provides maximum convenience to the user.

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“…The coil structure, which consists of a transmitting coil (L 1 ) and a receiving coil (L 2 ), can use magnetic bars to increase efficiency and reduce magnetic fields that can interfere with nearby electronics [21][22][23]. Based on [24,25], the magnetic flux density (B C ) of the coil structure is given by:…”

Section: Magnetic Saturationmentioning

confidence: 99%

Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

Lee

Yun

2020

Energies

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This paper presents a highly efficient three-port converter to integrate energy storage (ES) and wireless power transfer (WPT) systems. The proposed converter consists of a bidirectional DC-DC converter and an AC-DC converter with a resonant capacitor. By sharing an inductor and four switches in the bidirectional DC-DC converter, the bidirectional DC-DC converter operates as a DC-DC converter for ES systems and simultaneously as a DC-AC converter for WPT systems. Here, four switches are turned on under the zero voltage switching conditions. The AC-DC converter for WPT system achieves high voltage gain by using a resonance between the resonant capacitor and the leakage inductance of a receiving coil. A 100-W prototype was built and tested to verify the effectiveness of the converter; it had a maximum power-conversion efficiency of 95.9% for the battery load and of 93.8% for the wireless charging load.

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Design of Magnetic Coupler for Wireless Power Transfer

Cited by 19 publications

References 17 publications

Investigation on Coil Geometry in WPT Systems for Charging EVs Applications

Investigation on Coil Geometry in WPT Systems for Charging EVs Applications

Sustainable E-Bike Charging Station That Enables AC, DC and Wireless Charging from Solar Energy

Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

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