Abstract: The invention provides a motor core movable relative to a stator. The motor core and the stator core comprise base members and a plurality of adjacent tooth members with improved geometry. Each tooth member comprises a tooth surface and tooth sides. The tooth sides extend from the tooth surface toward the base member. At least one of the tooth sides comprises a tip portion and a base portion. The tip portion extends from the tooth surface to the base portion. The base portion extends from the tip portion to an adjoining base portion of a tooth side of an adjacent tooth member. The tip portion is curved.

Abstract: The present invention relates to a method and apparatus for reducing noise and vibration generated by a variable reluctance motor. The relative positions of paired opposing modules in each phase unit are adjusted relative to a stator, even after assembly of the motor, to reduce the noise and vibration.

Abstract: The present invention relates to a method and apparatus for reducing noise and vibration generated by a variable reluctance motor. The relative positions of paired opposing modules in each phase unit are adjusted relative to a stator, even after assembly of the motor, to reduce the noise and vibration.

Abstract: The invention provides a motor core movable relative to a stator. The motor core and the stator core comprise base members and a plurality of adjacent tooth members with improved geometry. Each tooth member comprises a tooth surface and tooth sides. The tooth sides extend from the tooth surface toward the base member. At least one of the tooth sides comprises a tip portion and a base portion. The tip portion extends from the tooth surface to the base portion. The base portion extends from the tip portion to an adjoining base portion of a tooth side of an adjacent tooth member. The tip portion is curved.

Abstract: A high power, low cost magnetically uncoupled variable reluctance motor that provides increased performance while reducing hysteresis losses, thereby reducing the amount of generated heat that needs to be drawn away from a phase assembly. The motor includes a linear or rotary variable reluctance motor that has at least one phase assembly including a plurality of phase units that are magnetically isolated from each other. At least one phase unit includes at least one module removably positioned between a pair of housing plates. By removably positioning the modules between the housing plates, the number of modules within the phase assembly can be adjusted so that the motor produces a desired power output. In one embodiment, each module has a substantially C-shape that includes a pair of legs, each positioned on one side of a main body portion. An electrically conductive coil is positioned about the main body portion and arranged in a substantially V-shape.