Quote:
Originally Posted by dcb
the rotor is not inherently magnetic though. The BLDCs seem to put the halls next to existing moving permanent magnets. With the wibbly wobbly flux angle in an induction motor, the hall effect might not have a good point of reference
...or a hall effect might actually be useful in measuring flux angle, when combined with rotor position detection.
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Well, since the hall sensor actually detects the change in the magnetic field at worst you get to divide the pulses from it with three if it gets confused by the AC motor...