Single phase induction motor with partially shared windings

A motor comprising:

• a stator core;
• a rotor mounted in rotational relationship with the stator core;
• a plurality of windings components wound on the stator core;
• a first one of the plurality of winding components and a second one of the plurality of winding components being selectively energized to operate the motor at a 4-pole pole speed;
• and
• a third one of the plurality of winding components and the first one of the plurality of winding components being selectively energized to operate the motor at an 8-pole pole speed such that the second one of the plurality of winding components is only energized when the motor is operated at the 4-pole pole speed.

A single phase, three-speed induction motor comprising:

• a stator core;
• a rotor mounted in rotational relationship with the stator core;
• a first winding being wound on the stator core and being selectively energized in an N-pole configuration wherein N is at least two and is an integer multiple of two, said first winding including a first winding portion and a second winding portion;
• a second winding being wound on the stator core and being selectively energized in an M-pole configuration, wherein M is an even integer and is least two-times N;
• and
• wherein said second winding shares the first winding portion of the first winding but not the second winding portion of the first winding.

A motor arranged to be operated at a plurality of pole speeds, said motor comprising:

• a stator core;
• a rotor in rotational relationship with the stator core;
• a first winding portion on the stator core for operating the motor at a first pole speed, said first winding portion having a substantially sinusoidal wire turn distribution;
• and
• a second winding portion on the stator core for operating the motor at the first pole speed, said second winding portion having a substantially nonsinusoidal wire turn distribution.

A motor arranged to be operated in a 4-pole configuration and an 8-pole configuration, said motor comprising:

• a stator core;
• a rotor in rotational relationship with the stator core;
• a first winding portion wound on the stator core being energized only when operating the motor in the 4-pole configuration, said first winding portion having a substantially sinusoidal wire distribution;
• and
• a second winding portion wound on the stator core being energized when operating the motor in both the 4-pole configuration and the 8-pole configuration, said second winding portion having a substantially nonsinusoidal wire distribution.

A motor arranged to be operated in a 4-pole configuration, a 6-pole configuration, and an 8-pole configuration, said motor comprising:

• a stator core;
• a rotor in rotational relationship with the stator core;
• a first winding portion wound on the stator core, said first winding portion being energized in the 4-pole configuration only;
• a second winding portion wound on the stator core, said second winding portion being energized in the 6-pole configuration only;
• a third winding portion wound on the stator core, said third winding portion being energized in the 8-pole configuration only;
• and
• a fourth winding portion wound on the stator core, said fourth winding portion being energized in the 4-pole configuration and the 8-pole configuration, but not being energized in the 6-pole configuration.