93% efficiency at 1kW and 30kW wireless power delivery (from AC plug to vehicle, not 93% only for the transmission): http://www.deltaenergysystems.com/en/Wireless-Charging-Syste...
This is very close to systems that are using cables and connectors.
This is very close to systems that are using cables and connectors.
Given the sheer amount of power used by vehicles, I would prefer we minimize losses there. Wireless charging for tablets, smartphones and other devices is less of a concern.
Go educate yourself on the efficiency of power supplies: https://www.extremetech.com/extreme/143029-empowered-can-hig...
Over 90% is amazing.
PS: I do wonder about efficiency limits because transformers are effectively wireless power just at cm range.
Fast charging stations is probably worse though.
I have this picture that eventually all parking structures will be fitted with solar power to charge parked vehicles. (Roads would be even better, of course.)
Of course if you meant something like panels on the side of the road, or roofs, or something like that then that's fine, those installations would just be pretty standard solar panel installations. But covering the road surface itself is just a bad idea that would require a significant engineering effort and massive cost to work to any degree at all.