Abstract: A stator core-end of an electric generator utilizes amorphous metal laminate packages to reduce eddy currents and heating in the stator core thereby increasing generator capacity. The packages are formed as complete units before installation into the stator core. The amorphous metal laminate packages comprise alternating layers of amorphous metal laminates and non-amorphous metal laminates.

Abstract: Keybar voltages in electric machines are reduced by electromagnetically optimizing the positioning of the keybars with respect to stator winding phase belts, the selection of the number of keybars, the selection of the number of stator slots, and/or the direction of rotation of a rotor with respect to the stator.

Abstract: A method for detecting core faults includes (a) positioning a magnetic yoke near at least one tooth of the core, the magnetic yoke being wound by a winding; (b) supplying current to the winding to inject magnetic flux into the at least one tooth of the core; (c) measuring a signal resulting from the injected magnetic flux; and (d) using the measured signal to detect core faults.

Abstract: A power generator that operates at a reduced keybar voltages and currents, flange currents, and keybar voltage differentials includes a keybar shield that reduces the amount of magnetic flux coupling into a keybar of multiple keybars during operation of the generator. By reducing the amount of coupled flux, the keybar shield reduces a keybar voltage and a keybar current in a keybar, reduces keybar current flowing into a flange, and reduces a voltage differential between voltages induced by the flux in the multiple keybars.

Abstract: A thermal control and keybar voltage differential reduction mechanism is provided for use in a power generator having multiple keybars that are each coupled to a flange. The mechanism includes an electrically conductive coupler capable of being electrically coupled to each of a first keybar and a second keybar of the multiple keybars. The coupler facilitates a flow of a current from the first keybar to the second keybar in response to a rotation of a rotor of the power generator, shunting the current away from the flange and producing a first magnetic field that opposes a second magnetic field induced by the rotation of the rotor.

Abstract: A power generator that operates at a reduced temperature level includes a flux shunt that reduces the amount of fringing magnetic flux axially impinging upon a stator, flange, and multiple keybars during operation of the generator. By reducing the amount of axially impinging flux, the flux shunt reduces an operating temperature of the stator and flange and reduces a voltage differential between keybar voltages induced by the flux in the multiple keybars.

Abstract: A thermal control and keybar voltage differential reduction mechanism is provided for use in a power generator having multiple keybars that are each coupled to a flange. The mechanism includes an electrically conductive coupler capable of being electrically coupled to each of a first keybar and a second keybar of the multiple keybars. The coupler facilitates a flow of a current from the first keybar to the second keybar in response to a rotation of a rotor of the power generator, shunting the current away from the flange and producing a first magnetic field that opposes a second magnetic field induced by the rotation of the rotor.

Abstract: A power generator that operates at a reduced keybar voltages and currents, flange currents, and keybar voltage differentials includes a keybar shield that reduces the amount of magnetic flux coupling into a keybar of multiple keybars during operation of the generator. By reducing the amount of coupled flux, the keybar shield reduces a keybar voltage and a keybar current in a keybar, reduces keybar current flowing into a flange, and reduces a voltage differential between voltages induced by the flux in the multiple keybars.

Abstract: A salient pole synchronous machine rotor includes a rotor shaft; a plurality of salient poles concentric to the rotor shaft; and end plates facing opposing ends of the salient poles, each end plate extending continuously around the rotor shaft.

Abstract: A hybrid synchronous machine (10) includes a cylindrical element (12 or 14) having slots (22 and/or 28); excitation windings (24 or 26) situated in at least some of the slots; and permanent magnets (30) situated in at least some of the slots. For a hybrid salient pole machine 16 a cylindrical element (112) has salient poles (36) with excitation windings (224) situated around the salient poles and permanent magnets (530, 630, 730, or 830) supported by the salient poles.

Abstract: An assembly for transferring current comprises at least one electrically conductive slip ring; at least one electrically conductive brush for supplying current to the at least one slip ring; and an electric or pressure actuator driven vibration source for changing the position of the brush with respect to the slip ring. If desired, brush current can shared by using inductance variations or by selective coupling of rotor windings to the slip rings.

Abstract: An assembly for transferring current comprises at least one electrically conductive slip ring; at least one electrically conductive brush for supplying current to the at least one slip ring; and an electric or pressure actuator driven vibration source for changing the position of the brush with respect to the slip ring. If desired, brush current can shared by using inductance variations or by selective coupling of rotor windings to the slip rings.