I have seen this Michelin WM
a few times, but apparently overlooked the claimed Kws of the thing.
So they have achieved 30Kw out of a motor the size of ... what ? my fist ?
Estimated by the ratio between the rim diameter and the electric motor it will not be more than 10 cm (3.9 inch) of diameter. Also NO COOLING visible ???
At 90 % efficiency this motor will also produce 3 kw of heat.
Have you ever seen a motor of 30 KW ? That's (in the real world) a beast of at least 200 kg (440 lbs). They also are specifying that it is "continuous" power.
to see what a 30Kw asynchronous motor of the company Baldor looks like. It is 19 inch (25Cm) wide by 33 inch (85Cm) long and weights 709 lbs (320kg).
So if the Michelin wonder boys managed to make that engine of a "negligible weight", so that it can be fitted together with a lot of other components (one has even to search for it in that complex setup) than that is really really an invention !
I am astonished. Can anybody comment on this ?