Abstract: A stator for an electrical machine includes teeth assembled from a plurality of stacked laminations mounted on a cylindrical protective surface thereby forming a plurality of slots. The stator also includes an armature winding assembled within the teeth by inserting components of the armature winding into the plurality of stator slots from positions external to the teeth in a manner that facilitates mitigating potential for coil distortion. The armature winding includes a plurality of coils that each include an end winding. The stator further includes a segmented yoke inserted around the armature winding in a manner that facilitates mitigating a potential for disturbing the end winding of the coils. Independently assembling the stator components in this manner facilitates varying a thickness and/or the number of heat conducting laminations between the yoke and teeth that subsequently facilitates heat transfer from the armature winding to an outer pressure casing of the machine.

Abstract: A method of operating a power generation system and a power generation system are provided. The method includes coupling at least one electrical generator to at least one prime mover, wherein the at least one generator includes at least one of a stator and a rotor wherein at least one of the stator and the rotor includes superconducting windings therein, and coupling at least one cryogenic refrigeration system to the superconducting windings, wherein the at least one cryogenic refrigeration system is coupled in flow communication with the superconducting windings to facilitate reducing an operating temperature of the superconducting windings.

Abstract: A sensor measures temperature in stationary components of electrical machines using fiber optics. An optical fiber is embedded in a non-metallic ribbon. Notches are cut in the ribbon to effect bends that accommodate a shape of a stationary component. The ribbon and optical fiber are attached to the stationary component. A series of laser pulses can be injected from at least one end of the optical fiber, and the stationary component temperature can be monitored by interrogation of reflections from the series of laser pulses.

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: A rotor is disclosed for a super-conducting synchronous machine including: a rotor core; a super-conducting coil extending around at least a portion of the rotor core, said coil having coil side sections on opposite sides of said rotor core; a vacuum housing covering at least one of said coil side sections, and a conductive shield over said vacuum housing and coil side sections.

Abstract: A rotor is disclosed for a super-conducting synchronous machine comprising: a rotor core; a super-conducting coil extending around at least a portion of the rotor core, said coil having coil side sections on opposite sides of said rotor core; a vacuum housing covering at least one of said coil side sections, and a conductive shield over said vacuum housing and coil side sections.

Abstract: A synchronous electromagnetic machine is disclosed having: a rotor coupled to a rotor cooling system; a stator around the rotor and separated from the rotor by an annular gap between the rotor and an inner surface of the stator, wherein the stator includes stator cooling passages; a stator ventilation system in fluid communication with the stator cooling passages, and the ventilation system including a cooling fluid driving device such as a stator mounted fan.

Abstract: A synchronous machine includes a rotor coupled to a rotor cooling system; a stator around the rotor and separated from the rotor by an annular gap between the rotor and an inner surface of the stator, and a stator ventilation system separate and independent of the rotor cooling system.

Abstract: A stator core assembly is provided in which the winding is installed from the convex surface of an inner, strong tube, outwardly. The teeth or tooth structures that define the slots for the winding are secured to the strong tube and an outer core is secured to the outer ends of the teeth after the windings have been assembled.

Abstract: A rotor is disclosed for a super-conducting synchronous machine having: a rotor core; a super-conducting coil extending around at least a portion of the rotor core, the coil having coil side sections on opposite sides of the rotor core; a vacuum housing covering at least one of the coil side sections, and a conductive shield over the vacuum housing and coil side sections.

Abstract: A synchronous machine is disclosed that includes a rotor coupled to a rotor cooling system; a stator around the rotor and separated from the rotor by an annular gap between the rotor and an inner surface of the stator, and a stator ventilation system separate and independent of the rotor cooling system.

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: A rotor is disclosed for a super-conducting synchronous machine comprising: a rotor core; a super-conducting coil extending around at least a portion of the rotor core, said coil having coil side sections on opposite sides of said rotor core; a vacuum housing covering at least one of said coil side sections, and a conductive shield over said vacuum housing and coil side sections.

Abstract: A system for transferring power between a first electrical system and a second electrical system comprises a rotary transformer (105) comprising a rotor (110) having rotor windings and a stator (112) having stator windings. The windings of at least one of the rotor and the stator are high power cables utilized to obviate employment of a transformer between the one of the rotor and the stator and one of the first electrical system and the second electrical system.

Abstract: A stator core assembly is provided in which the winding is installed from the convex surface of an inner, strong tube, outwardly. The teeth or tooth structures that define the slots for the winding are secured to the strong tube and an outer core is secured to the outer ends of the teeth after the windings have been assembled.

Abstract: A system for transferring power between a first electrical system and a second electrical system comprises a rotary transformer (105) comprising a rotor (110) having rotor windings and a stator (112) having stator windings. The windings of at least one of the rotor and the stator are high power cables utilized to obviate employment of a transformer between the one of the rotor and the stator and one of the first electrical system and the second electrical system.

Abstract: A stator core assembly is provided in which the winding is installed from the convex surface of an inner, strong tube, outwardly. The teeth or tooth structures that define the slots for the winding are secured to the strong tube and an outer core is secured to the outer ends of the teeth after the windings have been assembled.

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.

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.