Investigation of Structure and Material for Back Yoke at 13.56 MHz Wireless Power Transfer Focused on High Transmission Efficiency

Wireless power transfer (WPT) is a technique to send electricity without the need for a mechanical point of contact. Because of the widespread use of WPT technology, fast charging speeds and space saving devices are desired. Therefore, in order to shorten the charging time, suitable materials and st...

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Veröffentlicht in:IEEE transactions on magnetics 2019-07, Vol.55 (7), p.1-5
Hauptverfasser: Miura, Daichi, Tokudaiji, Yuta, Murasato, Kohei, Hattori, Yusuke, Bu, Yinggang, Mizuno, Tsutomu
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container_end_page 5
container_issue 7
container_start_page 1
container_title IEEE transactions on magnetics
container_volume 55
creator Miura, Daichi
Tokudaiji, Yuta
Murasato, Kohei
Hattori, Yusuke
Bu, Yinggang
Mizuno, Tsutomu
description Wireless power transfer (WPT) is a technique to send electricity without the need for a mechanical point of contact. Because of the widespread use of WPT technology, fast charging speeds and space saving devices are desired. Therefore, in order to shorten the charging time, suitable materials and structures of the back yoke were examined. We made a core and cap-shaped back yoke using an amorphous powder with low loss. As a result, the transmission efficiency in the ideal state increased by 0.7%, and at 50 W transmission, it increased by 1.2%.
doi_str_mv 10.1109/TMAG.2019.2895199
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subjects Amorphous magnetic materials
Back
Back yoke
Charging
Core loss
Couplings
Electric contacts
industrial
magnetic composite material
Magnetic cores
Magnetic resonance imaging
Magnetism
medical band
Powders
Power efficiency
Power transmission
scientific
Transmission efficiency
wireless power transfer (WPT)
Wireless power transmission
title Investigation of Structure and Material for Back Yoke at 13.56 MHz Wireless Power Transfer Focused on High Transmission Efficiency
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