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 |
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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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