Abstract: An electrical machine comprising a rotor 20, a stator 30 and an air gap 40 arranged between the rotor 20 and the stator 30 is provided. The stator 30 or rotor 20 comprises a plurality of electrical coils 90, wherein one or more of the electrical coils 90 carry a heat sink, wherein the heat sink is attached to the electrical coil with a thermally conductive material. Methods for modifying a temperature distribution of a stator in an electrical machine are also provided.

Abstract: An electrical machine comprising a rotor 20, a stator 30 and an air gap 40 arranged between the rotor 20 and the stator 30 is provided. The stator 30 or rotor 20 comprises a plurality of electrical coils 90, wherein one or more of the electrical coils 90 carry a heat sink, wherein the heat sink is attached to the electrical coil with a thermally conductive material. Methods for modifying a temperature distribution of a stator in an electrical machine are also provided.

Abstract: A shim pack to reduce vibration of a stator core is disclosed. The stator core may include a plurality of laminates coupled to a dovetail of a keybar and separated by a space block. The shim pack may include an elongated body extending from a first end including a dovetail slot configured to couple to the dovetail of the keybar to a second end extending radially at least substantially an entire length of an adjacent space block. A stator and related generator including the shim pack may also be provided.

Abstract: A shim pack to reduce vibration of a stator core is disclosed. The stator core may include a plurality of laminates coupled to a dovetail of a keybar and separated by a space block. The shim pack may include an elongated body extending from a first end including a dovetail slot configured to couple to the dovetail of the keybar to a second end extending radially at least substantially an entire length of an adjacent space block. A stator and related generator including the shim pack may also be provided.

Abstract: A shim pack to reduce vibration of a stator core is disclosed. The stator core may include a plurality of laminates coupled to a dovetail of a keybar and separated by a space block. The shim pack may include an elongated body extending from a first end including a dovetail slot configured to couple to the dovetail of the keybar to a second end extending radially at least substantially an entire length of an adjacent space block. A stator and related generator including the shim pack may also be provided.

Abstract: Embodiments of the invention relate generally to turbo-generators and, more particularly, to suspension systems for turbo-generators and the attenuation of vibration in a stator core induced by an electromagnetic load. In one embodiment, the invention provides a support clamp comprising: an arcuate body; a first affixation point; a second affixation point; and a securing point between the first and second affixation points, wherein each of the first and second affixation points includes a radially-oriented opening extending from an inner surface to an outer surface and the securing point includes an area adjacent to an angled opening extending from a first surface to a second surface, each of the first and second surfaces lying substantially perpendicular to the inner and outer surfaces of the arcuate body.

Abstract: A shim pack to reduce vibration of a stator core is disclosed. The stator core may include a plurality of laminates coupled to a dovetail of a keybar and separated by a space block. The shim pack may include an elongated body extending from a first end including a dovetail slot configured to couple to the dovetail of the keybar to a second end extending radially at least substantially an entire length of an adjacent space block. A stator and related generator including the shim pack may also be provided.

Abstract: Embodiments of the invention relate generally to electromagnetic devices and, more particularly, to the compression of stator core laminations using wire rope members and to stator cores and electromagnetic devices employing such wire rope members. In one embodiment, the invention includes: affixing a first end of a wire rope member to a first flange plate disposed adjacent a first end of a plurality of stator laminations; affixing a second end of the wire rope member to a second flange plate disposed adjacent a second end of the plurality of stator laminations; tensioning at least one of the first end or the second end of the wire rope member against at least one of the first flange plate and the second flange plate to exert a compressive force against the first flange plate, the second flange plate, and the plurality of stator laminations.

Abstract: Embodiments of the invention relate generally to turbo-generators and, more particularly, to suspension systems for turbo-generators and the attenuation of vibration in a stator core induced by an electromagnetic load. In one embodiment, the invention provides a support clamp comprising: an arcuate body; a first affixation point; a second affixation point; and a securing point between the first and second affixation points, wherein each of the first and second affixation points includes a radially-oriented opening extending from an inner surface to an outer surface and the securing point includes an area adjacent to an angled opening extending from a first surface to a second surface, each of the first and second surfaces lying substantially perpendicular to the inner and outer surfaces of the arcuate body.

Abstract: Embodiments of the invention relate generally to electromagnetic devices and, more particularly, to the compression of stator core laminations using wire rope members and to stator cores and electromagnetic devices employing such wire rope members. In one embodiment, the invention includes: affixing a first end of a wire rope member to a first flange plate disposed adjacent a first end of a plurality of stator laminations; affixing a second end of the wire rope member to a second flange plate disposed adjacent a second end of the plurality of stator laminations; tensioning at least one of the first end or the second end of the wire rope member against at least one of the first flange plate and the second flange plate to exert a compressive force against the first flange plate, the second flange plate, and the plurality of stator laminations.

Abstract: A laminated rotor and stator are provided for a dynamoelectric machine. The rotor includes at least one end flange having a plurality of cooling apertures and at least one rotor inner vent lamination having a plurality of cooling apertures. At least one rotor outer vent lamination has a plurality of cooling apertures in communication with a first plurality of radially oriented ventilating slots. The end flange, rotor inner vent lamination and rotor outer vent lamination are configured together into a rotor lamination stack, and the plurality of cooling apertures form a generally axial cooling passage for a flow of a cooling medium.

Abstract: A laminated rotor and stator are provided for a dynamoelectric machine. The rotor includes at least one end flange having a plurality of cooling apertures and at least one rotor inner vent lamination having a plurality of cooling apertures. At least one rotor outer vent lamination has a plurality of cooling apertures in communication with a first plurality of radially oriented ventilating slots. The end flange, rotor inner vent lamination and rotor outer vent lamination are configured together into a rotor lamination stack, and the plurality of cooling apertures form a generally axial cooling passage for a flow of a cooling medium.

Abstract: A method for assembling an electric machine is provided. The method includes providing a rotor having a cavity formed therein. At least one contoured recess is formed in a portion of the cavity. A wedge is inserted into the cavity. The wedge includes at least one contoured protrusion that is configured to mirror the at least one contoured recess of the cavity. The wedge is inserted such that the at least one contoured protrusion is positioned within the at least one contoured recess to facilitate positioning the wedge within the cavity. The at least one contoured protrusion and the at least one contoured recess are shaped to facilitate minimizing stresses within the rotor and the wedge.

Abstract: A method for assembling an electric machine is provided. The method includes providing a rotor having a cavity formed therein. At least one contoured recess is formed in a portion of the cavity. A wedge is inserted into the cavity. The wedge includes at least one contoured protrusion that is configured to mirror the at least one contoured recess of the cavity. The wedge is inserted such that the at least one contoured protrusion is positioned within the at least one contoured recess to facilitate positioning the wedge within the cavity. The at least one contoured protrusion and the at least one contoured recess are shaped to facilitate minimizing stresses within the rotor and the wedge.