Abstract: A PSC/PSC motor for 2-pole operation and 4-pole operation. The motor uses an independent 2-pole main winding and an independent 4-pole main winding. An auxiliary winding includes an independent 2-pole auxiliary winding, an independent 4-pole auxiliary winding, and a shared auxiliary winding used in both the 2-pole operation and the 4-pole operation.

Abstract: A PSC/PSC motor for 2-pole operation and 4-pole operation. The motor uses an independent 2-pole main winding and an independent 4-pole main winding. An auxiliary winding includes an independent 2-pole auxiliary winding, an independent 4-pole auxiliary winding, and a shared auxiliary winding used in both the 2-pole operation and the 4-pole operation.

Abstract: A segmented inner stator comprises a stator core and a stator winding. The stator core includes a plurality of core segments which are retained together in a circular arrangement by at least one retaining ring and are mated with each other. At least some of the core segments are provided with slots on the radial side surfaces. The at least one retaining ring comprises a radial extension portion extending along the axial side surface of the core segment. A plurality of corresponding axial projections are provided on the radial extension portion of the at least one retaining ring along the circumferential direction to be inserted into the slot on one of the core segments so that the core segments are not free to move axially and radially relative to each other or relative to the retaining rings.

Abstract: A segmented inner stator comprises a stator core and a stator winding. The stator core includes a plurality of core segments which are retained together in a circular arrangement by at least one retaining ring and are mated with each other. At least some of the core segments are provided with slots on the radial side surfaces. The at least one retaining ring comprises a radial extension portion extending along the axial side surface of the core segment. A plurality of corresponding axial projections are provided on the radial extension portion of the at least one retaining ring along the circumferential direction to be inserted into the slot on one of the core segments so that the core segments are not free to move axially and radially relative to each other or relative to the retaining rings.

Abstract: A 4/6 pole PSC motor having main and auxiliary winding configurations. Common windings are energized in both a 4-pole configuration and energized in a 6-pole configuration for both the main and the auxiliary winding configurations. An additional winding is energized in the 4-pole configuration only. As a result, the air-gap flux level of the 4-pole configuration can be varied substantially independent of the air-gap flux level of the 6-pole configuration by varying the configuration of the additional winding.

Abstract: A 4/6 pole PSC motor having main and auxiliary winding configurations. Common windings are energized in both a 4-pole configuration and energized in a 6-pole configuration for both the main and the auxiliary winding configurations. An additional winding is energized in the 4-pole configuration only. As a result, the air-gap flux level of the 4-pole configuration can be varied substantially independent of the air-gap flux level of the 6-pole configuration by varying the configuration of the additional winding.

Abstract: A single phase, three-speed Pole-changing electric motor has a stator and a rotor rotatably mounted within the stator. The stator includes a core having a plurality of slots, and a plurality of windings in the slots for operating at least three speeds. The windings are configured and arranged so that a substantial portion of the windings used in operating at one speed are used in operating at another speed. The reconnection of windings for different speeds is simple and easy to implement, for example with an external timer, switch, or relay.

Abstract: An electric motor comprising a stator having sixteen or thirty two slots and three windings asymmetrically arranged in the slots to achieve a substantially balanced three-phase operation.

Abstract: A rotor for a two-pole synchronous reluctance or a switched reluctance motor can be constructed from a stack of flat, planar laminations of grain-oriented materials. To enhance the necessary anisotropy of reluctance, slots are provided in the lamination along the magnetic flux lines in the preferred grain direction. The laminations may be provided with an essentially circular outer perimeter, and slots for a squirrel cage winding provided. A complete, efficient squirrel cage winding can thus be provided for a two-pole synchronous reluctance motor for starting purposes.

Abstract: A rotor for a two-pole synchronous reluctance or a switched reluctance motor can be constructed from a stack of flat, planar laminations of grain-oriented materials. To enhance the necessary anisotropy of reluctance, slots are provided in the lamination along the magnetic flux lines in the preferred grain direction. The laminations may be provided with an essentially circular outer perimeter, and slots for a squirrel cage winding provided. A complete, efficient squirrel cage winding can thus be provided for a two-pole synchronous reluctance motor for starting purposes.

Abstract: A single phase alternating current four pole/six pole capacitor run induction motor is provided having a stator assembly including three coil groups, each of the coil groups having four coil sets. Each of the winding sets can change the direction of current flow in its half of the coil sets by reconnecting the coil sets either in parallel or in series. For high speed operation, the coil sets of group one are connected parallel with one another, and in series with the similarly parallel connected coil sets of group two. This arrangement defines a four pole main winding for the motor. A pair of the coil sets of group three are connected in parallel with one another, and defines the four pole auxiliary winding for the motor. In six pole operation, the coil sets of group one 1 are connected in series to parallelly connected coil sets of group three to define the six pole auxiliary winding.