3 ms·

Sorry I may have misunderstood - is an electric car motor fundamentally different in some way from the one I learnt back in school? (I ask honestly as I find th

Sorry I may have misunderstood - is an electric car motor fundamentally different in some way from the one I learnt back in school? (I ask honestly as I find that my education may not have taught me everything)

bob1029 5y ago
Fundamentally, no. It's all about controlling the field effect more precisely now. See: https://en.m.wikipedia.org/wiki/Reluctance_motor https://en.m.wikipedia.org/wiki/Reluctance_motor
- belter 5y ago
  Teslas have a: "“Switched Reluctance motor, using permanent magnets.” ...“Tesla calls it a PMSRM, Permanent Magnet Switched Reluctance Motor." https://cleantechnica.com/2018/03/11/tesla-model-3-motor-in-depth/ https://cleantechnica.com/2018/03/11/tesla-model-3-motor-in-...
  - adrian_b 5y ago
    It is likely that the Tesla motor has a clever geometry for achieving low torque ripple and high efficiency, but combining switched reluctance and permanent magnets in the same motor is nothing new. This combination has been used for many decades in the so-called hybrid stepping motors, where "hybrid" means that both PM and SR are used. In the case of stepping motors, the advantage of the combination is to provide in the same motor both very small steps and also a static torque, i.e. the motor can maintain a position even without the power supply.
pjc50 5y ago
Depends what you were taught in school, but somewhat: they're different from the old DC motors with brushes and commutation that you might have had in childhood toys.
beckman466 5y ago
> I ask honestly as I find that my education may not have taught me everything Side tangent: would you say your education overall gave you a good base to build on? If yes, what sort of curriculum were you taken through?
idiotsecant 5y ago
If you only know about one type of electric motor, then yes a lot of motors are different than the one you learned about in school. Induction machines, synchronous machines, steppers ,bldc machines, small universal machines etc... There is a world of different motor windings and rotor configurations out there for all kinds of different purposes.

bob1029 5y ago

Fundamentally, no. It's all about controlling the field effect more precisely now. See: https://en.m.wikipedia.org/wiki/Reluctance_motor https://en.m.wikipedia.org/wiki/Reluctance_motor

belter 5y ago
Teslas have a: "“Switched Reluctance motor, using permanent magnets.” ...“Tesla calls it a PMSRM, Permanent Magnet Switched Reluctance Motor." https://cleantechnica.com/2018/03/11/tesla-model-3-motor-in-depth/ https://cleantechnica.com/2018/03/11/tesla-model-3-motor-in-...
- adrian_b 5y ago
  It is likely that the Tesla motor has a clever geometry for achieving low torque ripple and high efficiency, but combining switched reluctance and permanent magnets in the same motor is nothing new. This combination has been used for many decades in the so-called hybrid stepping motors, where "hybrid" means that both PM and SR are used. In the case of stepping motors, the advantage of the combination is to provide in the same motor both very small steps and also a static torque, i.e. the motor can maintain a position even without the power supply.

pjc50 5y ago

Depends what you were taught in school, but somewhat: they're different from the old DC motors with brushes and commutation that you might have had in childhood toys.

beckman466 5y ago

> I ask honestly as I find that my education may not have taught me everything Side tangent: would you say your education overall gave you a good base to build on? If yes, what sort of curriculum were you taken through?

idiotsecant 5y ago

If you only know about one type of electric motor, then yes a lot of motors are different than the one you learned about in school. Induction machines, synchronous machines, steppers ,bldc machines, small universal machines etc... There is a world of different motor windings and rotor configurations out there for all kinds of different purposes.