Username1
100 W
- Joined
- Nov 26, 2013
- Messages
- 168
What if you had a normal BLDC DD hub motor, but instead of magnets on the rotor you had another set of electromagnets? To make this work you could have separate batteries spin with the rotor, so no cord would get twisted. I'm imagining an even number of poles on the stater and rotor, which line up together. All poles would always be active, simply switching polarity in sync to keep attracting and opposing the one next to it.
Would a motor like this be any good in practice, and what pros/cons would it have? Obviously it couldn't self start reliably but i don't see that being a issue with ebikes (just give a little push first). It could also have 0 cogging when powered off i believe due to lack of permanant magnets.
Would a motor like this be any good in practice, and what pros/cons would it have? Obviously it couldn't self start reliably but i don't see that being a issue with ebikes (just give a little push first). It could also have 0 cogging when powered off i believe due to lack of permanant magnets.