Abstract: A stator includes a yoke portion, and a tooth portion located inside the yoke portion in a radial direction. A fracture surface ratio of an inner surface of the tooth portion in the radial direction is lower than a fracture surface ratio of a side surface of the yoke portion.

Abstract: The present invention provides a stator core comprising an end portion and a pole arm extending from the end portion. The pole arm includes two spaced connecting arms and two pole claws respectively formed at distal ends of the connecting arms. The two pole claws define a space for receiving a rotor therein. The pole claws surround the space and form an arc pole surface. The arc pole surface forms a discontinuity opening along a circumferential direction. The discontinuity opening faces a spacing between the connecting arms and has a width changed along an axial direction.

Abstract: A flux-switching machine stator comprising two or more C-cores, each C-core having two legs and a back portion joining the legs, and a permanent magnet arranged between legs of adjacent C-cores. Each leg has a main portion and a tip portion further from the back portion characterized in that the tip portion of each leg is angled relative to the main portion of the respective leg.

Abstract: A universal motor has a stator and a rotor. The stator has stator core and a stator winding. The stator core has a yoke with two ends and two equivalent salient poles formed at the ends of the yoke respectively. The stator winding is wound on the yoke.

Abstract: An electric machine includes a rotor, a first tooth portion, and a second tooth portion spaced apart from the first tooth portion and cooperating with the first tooth portion to at least partially define a rotor opening. At least a portion of the rotor is disposed within the rotor opening. A bridge has a first end connected to the first tooth portion and a second end connected to the second tooth portion such that the bridge defines a portion of the rotor opening. An aperture is defined by the bridge and is disposed between the first end and the second end.

Abstract: A synchronous motor with permanent-magnet rotor, of the type comprising a stator with corresponding windings and a rotor arranged between pole shoes formed by the stator. The stator is constituted by two C-shaped ferromagnetic bodies whose ends form two pairs of pole shoes. Respective spools with windings are arranged along the ferromagnetic bodies. The two pairs of pole shoes are angularly mutually offset so that two pole shoes, each belonging to a distinct ferromagnetic body, are internal with respect to the angular configuration thus formed and the other two pole shoes are external with respect to the same angular configuration. The external pole shoes have a same axial height and wrap around a same axial portion of the rotor.

Abstract: A stator for a motor having a rotor includes a plurality of laminations each formed in a first elongated arrangement. Each lamination includes a first leg, a second leg, and an intermediate portion that are configured to be rearranged and stacked in a stackwise direction to define a core having a second U-shaped arrangement. A coil is coupled to the first leg.