A rotor for an electrically excited drive machine includes: a coil per rotor pole with, in each case, one first energizable coil unit, and a rotor core for holding the coils of the rotor poles. The coils have, in each case, at least one second energizable coil unit per rotor pole. The rotor has an interconnecting unit which is designed to interconnect the at least two coil units per coil in a manner which is dependent on an operating point of the electric drive machine in order to set the number of windings of the coil, and in order to electrically connect the coils of the rotor poles for configuring a rotor winding with an overall number of windings which is dependent on the numbers of windings of the coils.

In an embodiment, disclosed is a motor comprising: a stator; a rotor disposed to correspond to the stator; and a shaft coupled to the rotor, wherein the rotor comprises: a rotor core including a yoke and a plurality of rotor teeth arranged on the yoke so as to spaced apart in the circumferential direction; a plurality of magnets arranged between the rotor teeth; and a can disposed on the rotor core on which the plurality of magnets are arranged, the can includes a first can having a hole and a second can having a protruding part coupled to the hole, and the protruding part is disposed to face the outer surface of the magnet. Therefore, the motor uses the protruding part of the can so as to inhibit the separation of the magnets, inhibit the leakage of flux, and be implemented to be more compact than a conventional spoke-type motor. In addition, the motor can inhibit the leakage of magnetic flux that flows toward the shaft.

In an embodiment, disclosed is a motor comprising: a stator; a rotor disposed to correspond to the stator; and a shaft coupled to the rotor, wherein the rotor comprises: a rotor core including a yoke and a plurality of rotor teeth arranged on the yoke so as to spaced apart in the circumferential direction; a plurality of magnets arranged between the rotor teeth; and a can disposed on the rotor core on which the plurality of magnets are arranged, the can includes a first can having a hole and a second can having a protruding part coupled to the hole, and the protruding part is disposed to face the outer surface of the magnet. Therefore, the motor uses the protruding part of the can so as to inhibit the separation of the magnets, inhibit the leakage of flux, and be implemented to be more compact than a conventional spoke-type motor. In addition, the motor can inhibit the leakage of magnetic flux that flows toward the shaft.

A rotor for a rotary electric machine, capable of rotating around an axis of rotation, the rotor has first and second axial ends and includes a rotor body having a plurality of teeth circumferentially distributed around the axis and projecting radially, each tooth being in contact with two end plates. Also included is a rotor winding having a plurality of coils, each coil being wound on one of said teeth of the rotor body, each coil having two coil ends, two covers, a first cover located on the first axial end of the rotor and a second cover located on the second axial end of the rotor. The rotor has at least one non-conductive radial barrier that maintains a predetermined distance between the first coil end and the first cover on the one hand and between the second coil end and the second cover on the other hand.

An electromagnetic pole for a rotary electric machine with an axis of rotation is disclosed. The electromagnetic pole has a tooth comprising a tooth core of magnetic material. The tooth core is a laminated tooth core comprising a plurality of steel plates stacked in the direction of the axis of rotation. The electromagnetic pole also has a coil with a wire wound around the tooth core and at least one outer layer of the wire and one under layer of the wire. First portions of the wire of the outer layer are secured with second portions of the wire of the under layer by an adhesive material covering at least partially one of the first portions of the wire. A rotor comprising such electromagnetic poles, an electric machine comprising such a rotor, and a method for producing such an electromagnetic pole are also disclosed.

An electromagnetic pole for a rotary electric machine with an axis of rotation is disclosed. The electromagnetic pole has a tooth comprising a tooth core of magnetic material. The tooth core is a laminated tooth core comprising a plurality of steel plates stacked in the direction of the axis of rotation. The electromagnetic pole also has a coil with a wire wound around the tooth core and at least one outer layer of the wire and one under layer of the wire. First portions of the wire of the outer layer are secured with second portions of the wire of the under layer by an adhesive material covering at least partially one of the first portions of the wire. A rotor comprising such electromagnetic poles, an electric machine comprising such a rotor, and a method for producing such an electromagnetic pole are also disclosed.

A rotor including a rotor shaft, a rotor body formed of a stack of laminations having a plurality of teeth projecting radially, a field coil wound around each tooth of the plurality of teeth, and a plurality of wedge elements each having two lateral sides configured to come against respectively a corresponding tooth. A convex portion and a projecting portion adjoining the convex portion are arranged on each one of the two lateral sides of the corresponding wedge element, the convex portion complementing a corresponding concave portion of the corresponding tooth, and the projecting portion coming against a corresponding protruding portion of the corresponding tooth. The projecting portion is configured to exert a pressing force on the protruding portion such that to press the convex portion against the concave portion.

A rotor including a rotor shaft, a rotor body formed of a stack of laminations having a plurality of teeth projecting radially, a field coil wound around each tooth of the plurality of teeth, and a plurality of wedge elements each having two lateral sides configured to come against respectively a corresponding tooth. A convex portion and a projecting portion adjoining the convex portion are arranged on each one of the two lateral sides of the corresponding wedge element, the convex portion complementing a corresponding concave portion of the corresponding tooth, and the projecting portion coming against a corresponding protruding portion of the corresponding tooth. The projecting portion is configured to exert a pressing force on the protruding portion such that to press the convex portion against the concave portion.

A Wound Rotor Synchronous Motor (WRSM) includes a rotor body that is rotatably installed at a predetermined gap within a stator and a rotor coil that is wound at a plurality of rotor teeth. The WRSM includes: bobbins that are each disposed at both sides of a shaft direction of the rotor body so as to support the rotor coil and that are fixed to the rotor body by the rotor coil; a wedge member that is inserted in a shaft direction between rotor teeth of the rotor body so as to protrude to the outside of both ends of the rotor body, the wedge member supporting the rotor coil; and end coil covers that enclose a protruded portion of the wedge member at both sides of the shaft direction of the rotor body and that are each mounted at the bobbins.

A Wound Rotor Synchronous Motor (WRSM) includes a rotor body that is rotatably installed at a predetermined gap within a stator and a rotor coil that is wound at a plurality of rotor teeth. The WRSM includes: bobbins that are each disposed at both sides of a shaft direction of the rotor body so as to support the rotor coil and that are fixed to the rotor body by the rotor coil; a wedge member that is inserted in a shaft direction between rotor teeth of the rotor body so as to protrude to the outside of both ends of the rotor body, the wedge member supporting the rotor coil; and end coil covers that enclose a protruded portion of the wedge member at both sides of the shaft direction of the rotor body and that are each mounted at the bobbins.