Timeline for Why and how exactly is electric motor torque limited?
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| Aug 5, 2011 at 12:53 | comment | added | Alan Rominger | +1 for the permeability limits. I don't think those are present in small motors in devices, but almost every large power plant is somewhat close to that limit. | |
| Aug 5, 2011 at 8:56 | comment | added | Georg | That air gap is realistic for such a big motor. You have to allow for bending vibtations of the rotor, (those depend on length). You need some clearance for that on top of thermal expansion and general precision. I know of a motor for torpedoes in WWII constructed to be a scorched mass after some minutes in operation. This would not make sense if not heat from current were the limiting factor. | |
| Aug 5, 2011 at 3:48 | history | answered | Marty Green | CC BY-SA 3.0 |