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Class-E/?2 6.78 MHz HD-GiT-GaN based Amplifiers for WPT Systems
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| Author(s) |
Martin SCHIESTL |
| Abstract |
In this work, the influence of the load variation on the performance and voltage stress of high frequency zero voltage switching Class-E and Class-?2 amplifier with GaN devices in the power range up to 100 W is investigated. With several transient simulations a window of efficient operation for various amounts of loads is found. This proposed procedure can be used for various kinds of amplifiers in order to compare their suitability for different loads. In addition, the individual switch terminal waveforms are checked by their conformity between measurement and simulation. This leads to an improved selection process for the switch to further reduce losses. The converters are driven at a ISM band frequency of 6.78 MHz used in Wireless Power Transfer Systems based on the Air-Fuel standard. The proposed amplifiers exhibit efficiency up to 95\%. |
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| Filename: | 0036-epe2019-full-20224424.pdf |
| Filesize: | 5.278 MB |
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| Type |
Members Only |
| Date |
Last modified 2020-08-14 by System |
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