Preliminary study of 50 W Class-E GaN FET amplifier for 6.78 MHz capacitive wireless power transfer
| Autor: | Reiji Hattori, Abdul Hapid, Suziana Ahmad, Daiki Obara, Tarek M. Mostafa, Aam Muharam, Mitsuru Masuda |
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| Rok vydání: | 2020 |
| Předmět: |
FET amplifier
Materials science business.industry Capacitive sensing Amplifier Electrical engineering Impedance matching wireless power transfer high frequency power source Capacitance Radio frequency power transmission TK1-9971 class-e power amplifier high efficiency TJ1-1570 Electrical engineering. Electronics. Nuclear engineering Mechanical engineering and machinery Wireless power transfer capacitive power transfer business Electrical efficiency |
| Zdroj: | Journal of Mechatronics, Electrical Power, and Vehicular Technology, Vol 11, Iss 1, Pp 22-29 (2020) |
| ISSN: | 2088-6985 2087-3379 |
| Popis: | A preliminary study of Class-E radio frequency power amplifier for wireless capacitive power transfer (CPT) system is presented in this paper. Due to a limitation in coupling capacitance value, a high frequency operation of switching power inverter is necessary for the CPT system. A GaN MOSFET offers reliability and performance in a high frequency operation with an improved efficiency over a silicon device. Design specification related to the parallel load parameter, LC impedance matching and experimental analysis of the amplifier is explored. An experimental setup for the proposed inverter and its integration with the CPT system is provided, and the power efficiency is investigated. As a result, by utilizing a 6.78 MHz resonant frequency and a 50 Ω resistive load, 50 W of power has been transmitted successfully with an end to end system efficiency over 81 %. Additionally, above 17 W wireless power transfer was demonstrated successfully in the CPT system under 6 pF coupling with the efficiency over 70 %. |
| Databáze: | OpenAIRE |
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