Patent ID: 7525229

Claim:
A combination of a hysteresis-start permanent magnet motor and an AC power source, comprising: (a) a non-magnetic rotor shaft; (b) a permanent magnet rigidly attached to a center portion of the non-magnetic rotor shaft; (c) a non-magnetic spacer on each side of the permanent magnet, each non-magnetic spacer rigidly attached to the non-magnetic rotor shaft, to form a non-magnetic spacer-permanent magnet-non-magnetic spacer combination; (d) a hysteresis ring on each side of the non-magnetic spacer-permanent magnet-non-magnetic spacer combination, each hysteresis ring being rigidly attached to the non-magnetic rotor shaft; (e) a stator-segment around each of the hysteresis rings and a stator-segment around the permanent magnet, each stator-segment separated from a next stator-segment by a non-magnetic spacer, a first stator-segment being aligned with a first hysteresis ring, a second stator-segment being aligned with the permanent magnet, and a third stator-segment being aligned with a second hysteresis ring; and (f) the AC power source for supplying a first AC electrical current to the first stator-segment, for supplying a second AC electrical current to the second stator-segment and for supplying a third AC electrical current to the third stator-segment, a current level of the first AC electrical current being equal to a current level of the third AC electrical current, the current level of the first AC electrical current being unequal to a current level of the second AC electrical current, a phase of each of the first, second and third AC electrical currents having a mutual AC electrical phase.