A Switched Reluctance Machine (SRM) assembly is provided. The assembly comprises a stator with a plurality of stator poles with a coil wounded on each stator pole. Each of the plurality of stator poles comprises a plurality of sub-poles integrally formed therewith, and the plurality of sub-poles provide the closest interface between the stator and the rotor. Further, two coils of an opposing pair of stator poles are energized during an excitation phase which is configured to create a flux path between each of the plurality of opposing sub-poles of the energized stator poles. The rotor of the assembly comprises a plurality of poles extending from a surface to provide the closest interface between the rotor and stator. Further, the plurality of stator sub-poles and the plurality of rotor poles are arranged to provide a commutation angle for the SRM assembly less than 15 degrees.

A Switched Reluctance Machine (SRM) assembly is provided. The assembly comprises a stator with a plurality of stator poles with a coil wounded on each stator pole. Each of the plurality of stator poles comprises a plurality of sub-poles integrally formed therewith, and the plurality of sub-poles provide the closest interface between the stator and the rotor. Further, two coils of an opposing pair of stator poles are energized during an excitation phase which is configured to create a flux path between each of the plurality of opposing sub-poles of the energized stator poles. The rotor of the assembly comprises a plurality of poles extending from a surface to provide the closest interface between the rotor and stator. Further, the plurality of stator sub-poles and the plurality of rotor poles are arranged to provide a commutation angle for the SRM assembly less than 15 degrees.

In a control device for a switched reluctance motor, a voltage drop control is executed in which a voltage dropped to be lower than a voltage applied in a case where the switched reluctance motor is driven in a high-load region is applied to the switched reluctance motor, in a case where the switched reluctance motor is driven in a low-load region. The low-load region is a lower load region than the high-load region.

A reluctance motor has: a stator provided with drive coils to which multiphase drive currents are inputted; and a rotor provided with a plurality of salient poles which receive primary rotating force when magnetic fluxes generated in the drive coils are interlinked with the rotor, and the rotor has: inductor pole coils which are placed on magnetic paths on which spatial harmonic components superimposed on the magnetic fluxes generated in the drive coils are interlinked with the rotor side so that induced currents can be generated in the inductor pole coils due to the spatial harmonic components of the magnetic fluxes; rectifier elements which rectify the induced currents generated in the inductor pole coils; and electromagnet coils as defined herein, and the inductor pole coils and the electromagnet coils do not serve for each other's purposes but are placed on the rotor individually.

A resin portion of an output shaft has a large diameter section, from which one end portion of a rod outwardly projects, and an intermediate diameter section, which extends from the large diameter section in an axial direction and is rotatably supported by a housing. A gear portion is formed in an outer peripheral surface of the large diameter section and is meshed with a final gear. A recess is recessed in the axial direction in the large diameter section and extends in the circumferential direction along an entire circumferential extent of the rod. The intermediate diameter section is continuously filled with resin in a region, which extends from an outer peripheral surface of the rod to an outer peripheral surface of the intermediate diameter section in the radial direction, along the entire circumferential extent of the rod.