
15 Jun
2016
15 Jun
'16
3:52 p.m.
Most people think 60Hz when they think AC. But I would guess that in a motor AC is timed to the rotation so that commutators (I think that's what they are called) can be eliminated.
Would that AC be 60Hz or would it be variable, matching some function of the motor's current speed?
Variable speed AC motors use a variable frequency alternating current. Sometimes you can hear the frequency as it increases when the vehicle is starting. The alternating current creates a rotating magnetic field which 'carries along' the rotor. P. -- Peter Hiscocks Syscomp Electronic Design Limited, Toronto http://www.syscompdesign.com USB Oscilloscope and Waveform Generator 647-839-0325