Design of a Half-Bridge Converter for Self-Adapting Capacitive Wireless Power Transfer
- We present the design of a half-bridge converter
for a capacitively coupled wireless power transfer
system. The load signal acts as a positive feedback
signal for a self-oscillation circuit which generates the
driving gate signals for the converter. Our research
reveals a robust wireless operation for a large range
of load resistors and coupling capacitors. Based on an
electric network analysis we obtain design criteria for
self-oscillation and for the power transfer. The theoretical
predictions are confirmed by circuit simulation
and measurement results on a converter prototype with
GaN-HEMTs. We report on a transfer efficiency of 92%
for a power greater than 50W at a switching frequency
of 300kHz and 200V DC link voltage.
Metadaten| Author: | Norbert SeligerORCID |
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| Parent Title (English): | IEEE 2021 CENCON conference |
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| Publisher: | IEEE |
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| Document Type: | Conference Publication |
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| Language: | English |
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| Publication Year: | 2021 |
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| Release Date: | 2021/11/22 |
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| Tag: | Capacitive coupling; GaN half-bridge; Self-adaptive; Wireless power transfer |
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| Page Number: | 6 |
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| faculties / departments: | Fakultät für Ingenieurwissenschaften |
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