Smidge204 wrote:Herm wrote:Andy refresh my memory, an example of a brushless DC motor?
Electronically commutated motors, rather than brushes. The most common type I'm familiar with is PC fans; the rotor is a permanent magnet and the stator is on the inside. A hall effect sensor senses the polarity of the rotor magnets as it rotates and some transistors switch the current in the stator windings.
Though I've never seen a high HP one I'm sure it's possible and I wouldn't be totally surprised if they exist in multi-HP sizes. I'm skeptical they make them "car sized" though... at that point the power electronics and controls are such you might as well go with an AC motor.
The 5kW hub motor in my motorcycle is PMAC/BLDC. It's fed three-phase AC thru an inverter. Not that I would ever do such a thing, but if someone were to take it apart, they might see this:
Here's a 3000Hp version:
Here's where one may find it: