Peter C. Thompson <[email protected]> wrote:
They have chargers that can operate up to 11 kW, and effeciencies around 92 to 93%. If I remember correctly, BMW is using this charger for some high-end EVs. Not sure who Daimler is going with.
I would like to see some independent confirmation of this. 92-93% is hard to achieve even with a *wired* charger.
I suspect this is a marketing number, where the test conditions are carefully chosen to produce the best possible value (one of those "up to..." figures).
92-93% efficiency is about what I would expect for just the transformer alone of a switchmode power supply. And "wireless charging" is fundamentally just a transformer.
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