AC MOTOR THEORY
AC Motors
Figure 1 Three-Phase Stator
From one instant to the next, the magnetic fields of each phase combine to produce a magnetic
field whose position shifts through a certain angle. At the end of one cycle of alternating current,
the magnetic field will have shifted through 360°, or one revolution (Figure 2). Since the rotor
has an opposing magnetic field induced upon it, it will also rotate through one revolution.
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