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| Number | Title | Issue Date |
| 7876016 | Stator winding method and apparatus A stator assembly includes a stator core and at least one conductive bundle. The stator core has a first end, a second end, and a plurality of slots extending from the first end to the second end. The conductive bundle includes a plurality of individually insulated ... | 01/25/2011 |
| 7863795 | Method for producing a conductor bar of transposed stranded conductors A conductor bar for a large, rotating electric machine includes a press-formed conductor loop having a rectangular cross-sectional shape. The conductor loop includes a plurality of identical, helically wound, Roebel transposed, stranded conductors. Each of the stran... | 01/04/2011 |
| 7812499 | Armature winding of electric rotating machine, stator of electric rotating machine and electric rotating machine An armature winding of an electric rotating machine is provided, which includes at least one armature winding bar composed of a plurality of element wire conductors, wherein the armature winding bar includes an element wire conductor configured to have twisted trans... | 10/12/2010 |
| 7459825 | Stator winding rod A stator winding bar comprises a plurality of strands that are transposed in the manner of a Roebel bar in an active part having a prescribed length, the active part being divided into several areas having different lengths arranged one after the other, in each area... | 12/02/2008 |
| 7391141 | Electrical-discharge-inhibiting conformable layer for use in inner-cooler coils A conformable layer (14) for inhibiting electrical discharge between vent tubes (16) and strands (12) in an inner-cooled coil (5). The conformable layer comprises a resistive inner core (24) and a conductive strip (20) wrapp... | 06/24/2008 |
| 7368842 | Armature windings and dynamo-electric machine using the same An armature winding includes a plurality of strand groups each having strands transposed and bound in at least two rows and multiple tiers, and a main insulator for covering the strand group. The strands belonging to a strand group on one side of a central strand gr... | 05/06/2008 |
| 7352097 | Motor or generator and method of producing the same A plurality of slots are provided at a stator core. A coil component is produced by winding conductor wires around a forming tool several times. The coil component is cut off at a predetermined part and inserted into a slot so as to cross over the plurality of slots... | 04/01/2008 |
| 7346974 | Method for producing a conductor bar of transposed stranded conductors A method for producing a conductor bar including transposed stranded conductors for a large, rotating electric machine. The method includes a first step of cabling a plurality of electrically insulated individual wires to form a plurality of identical stranded condu... | 03/25/2008 |
| 7312552 | Rotary electro-dynamic machine and armature winding thereof Sub core sections are arranged at the end portions and the center portion of a stator core, and strand conductors are twisted and transposed by 360 degrees continuously toward the extending direction of winding slot. The length corresponding to transposition pitch 1... | 12/25/2007 |
| 7269890 | Slotless rotary electric machine and manufacturing method of coils for such a machine In a slotless permanent magnet rotary electric machinery, comprising a substantially cylindrical rotor (53) incorporated with a permanent magnet (52), a stator iron core (54) surrounding the rotor; and a coil (55) provided between the rot... | 09/18/2007 |
| 7262537 | Electric motor and generator component having a plurality of windings made from a plurality of individually conductive wires An electric motor or generator assembly includes a component, such as a stator, having a plurality of windings. A wire set including a plurality of individually conductive wires twisted together is manipulated within a core to establish the desired number of winding... | 08/28/2007 |
| 7248139 | High-current electrical coil construction A high-current electrical coil includes a plurality of flat, electrically-conductive strips bent to define together a coil in which the electrically-conductive strips are disposed coaxially and extend longitudinally with respect to the longitudinal axis of the coil.... | 07/24/2007 |
| 7088020 | Apparatus and method for consolidating conductive strands of a stator coil A header (10) for use with an inner-cooled half coil (13) in a stator phase winding of an electrical generator. The half coil may include a stack of cooling tubes (16,18) with a first stack of conductive strands (20, 22, 24, 26) adjacent ... | 08/08/2006 |
| 7026554 | Stator bar with exruded groundwall insulation An insulated stator bar and method of applying an outer insulation to a bare stator bar to form the insulated stator bar. The outer insulation surrounds a perimeter of the bare bar and extends along a longitudinal length of the bar. The outer insulation comprises at... | 04/11/2006 |
| 6935012 | Dynamo electric machine and method of manufacturing the same Each of a plurality of unit windings 41 is formed by being divided into a first winding section 42 having opened end portions and a second winding section 43, and the first winding section 42 is shaped in such a manner that a step in radi... | 08/30/2005 |
| 6930426 | Alternator stator having a multiple filar construction to improve convective cooling A stator for a dynamoelectric machine improves the cooling of the stator winding without increasing the size of the stator winding or the entire stator. The stator is of a unique construction wherein the size, and more specifically the cross sectional area or volume... | 08/16/2005 |
| 6922060 | Method for detecting partial conductor short circuits, and device for performing and using the method In a method for detecting partial conductor short circuits (7) in a conductor (11) including plural mutually insulated partial conductors (5) in which the partial conductors (5) are connected together at one or both ends of the conductor ... | 07/26/2005 |
| 6919664 | High voltage plants with electric motors In a plant comprising one or more electric machines constructed with insulated conductors and connected for heavy current via insulated conductors, the magnetic circuit in at least one of these electric machines is connected directly to a high supply voltage of 20-8... | 07/19/2005 |
| 6911759 | Stator coil assembly for superconducting rotating machines A stator for use in a rotating machine includes a first conductor; and a second conductor wound, in-hand, over the first conductor and along a longitudinal axis of the stator. The second conductor is electrically isolated from the first conductor along the length of... | 06/28/2005 |
| 6888286 | Stator coil assembly for superconducting rotating machines A stator support system for supporting a stator coil assembly includes an inner support tube having an outer surface; spaced windings supported on the inner support tube with spaces between adjacent windings defining gaps; support members, each disposed within one o... | 05/03/2005 |
| 6703752 | Stator winding bar for an electrical machine In a stator winding bar for an electrical machine without end winding transposition and with transposition in the active part of 450°, the middle part of the active part, in order to compensate the external fields acting in the region of the end windings... | 03/09/2004 |
| 6624547 | Power system having stator coils for grading voltage between inner vent tubes and coil strands and associated methods A stator for a power generation system and associated methods are provided. The stator preferably includes a plurality of high voltage stator coils. Each of the plurality of high voltage stator coils preferably includes a plurality of metal strands, a plu... | 09/23/2003 |
| 6043582 | Stable conductive material for high voltage armature bars A high voltage generator armature bar (10) that exhibits improved performance by forming one or more of its conductive components from a conductive material that uses a tin oxide-based composition as a conductive filler. The armature bar (10) is of the ty... | 03/28/2000 |
| 5945764 | Winding element for an electrical machine, assembly and set having a plurality of winding elements A winding element for an electrical machine, in particular a turbogenerator, includes an electrically conductive conductor configuration for carrying an electric current, an insulating layer surrounding the conductor configuration and a protective configu... | 08/31/1999 |
| 5925944 | Tapered electrode and voltage grading method for high voltage stator coils A tapered electrode with a rounded tab portion and a grading electrode is disclosed for minimizing the concentration of current flow to localized areas of the electrode. The tapered electrode comprises a base portion and a tab portion with a rounded end. ... | 07/20/1999 |
| 5907210 | Asynchronous discoidal electrical motor The asynchronous discoidal electric motor has stator (1A, 1B) windings (13) and radial rotor bars (2) embedded in notches (11, 22) opened by a very narrow slit (11, 21). These slits (11, 21) and notches (12, 22) may be machined electrochemically using a w... | 05/25/1999 |
| 5777417 | Transposed stator winding bar with extended field compensation Winding bars of AC machines include a multiplicity of mutually electrically insulated conductor elements, which are transposed according to the Roebel principle. The conductor elements in the two end clip sections and in the active part section are transp... | 07/07/1998 |
| 5760516 | Conductor bar for a stator winding of an electric machine The stator winding of an electrical machine comprises conductor elements which are spaced apart from one another, are electrically insulated from one another and are surrounded over their entire length by common main insulation. The cavities, which are ca... | 06/02/1998 |
| 5729068 | Electric machine with deformable insulation on soldering lugs An electric machine having a stator winding which is impregnated by total immersion. The bar ends of the stator winding have soldering lugs which are insulated from one another and with respect to grounded housing parts. In order to simplify the assembly ... | 03/17/1998 |
| 5723920 | Stator bars internally graded with conductive binder tape Stator bars for dynamoelectric machines are covered with an electrically conductive tape formed of a fabric support sheet carrying an electrically conductive polymeric binder system comprised of carbon particles dispersed in a polymeric matrix. The carbon... | 03/03/1998 |
| 5502359 | Small motor with permanent-magnet rotor A small motor having a two-pole permanent-magnet rotor and a U-shaped laminated stator having a pair of limbs with end portions that form magnetic poles for the rotor. The limbs carry alternately energized exciter coils including three nested winding laye... | 03/26/1996 |
| 5323079 | Half-coil configuration for stator A half-coil for the stator winding of an electrodynamic system such as an electrical generator or motor includes an improved tube stack arrangement and a roebelling configuration which is designed to minimize power loss. The tube stack arrangement include... | 06/21/1994 |
| 5258680 | Armature winding structure for electric motors An armature winding structure for use in an electric motor includes a web-shaped strand bundle composed of a plurality of parallel strands. The strand bundle has a plurality of longitudinally spaced bends and a plurality of straight strand bundle segments... | 11/02/1993 |
| 5175396 | Low-electric stress insulating wall for high voltage coils having Roebeled strands A wall structure for insulating the exterior surface of a high voltage coil having Roebeled windings is provided that comprises an inner insulating layer formed from a hardenable epoxy material for surrounding the coil and filling void spaces on the surfa... | 12/29/1992 |
| 5066881 | Semi-conducting layer for insulated electrical conductors A semi-conducting pyrolyzed glass fiber layer equalizes the electrical potential on the exterior surface of an insulated conductor when the layer covers the surface. The layer prohibits the development of a corona discharge and bleeds off any electrical c... | 11/19/1991 |
| 4959575 | Transpositioned multi-strand conductor for electric rotary machine Disclosed is a bar or conductor constituted by a plurality of strands disposed in a slot and extending outward from the opposite ends of the slot with each of the strands being substantially bisymmetrically vertically slanted so as to be transposed in the... | 09/25/1990 |
| 4658169 | Synchronous machine with coil halves The stator winding of a synchronous machine is made as a lap winding or as a wave winding and comprises a plurality of coils, each of which being composed of a top coil half (107) and a bottom coil half (105), the two coil halves, which are series-connect... | 04/14/1987 |
| 4638113 | Transposed bar for an electrical machine To simplify the fabrication and use of a transposed bar, the strip of insulating material for the strut projects higher than the conductor element stack and is incised along the longitudinal edges. Sections are formed, some of which (i.e., those immediate... | 01/20/1987 |
| 4633115 | Apparatus for connecting conductor strands with transposition in electrical rotary machine An apparatus for connecting conductor strands with transposition in an electrical rotary machine is disclosed to include a plurality of electrically conductive connector rods respectively connected to ends of the individual strands of each conductor, and ... | 12/30/1986 |
| 4481438 | High voltage electrical generator and windings for use therein Disclosed is a winding for a high voltage electrical generator comprising a plurality of bundles of conducting member arranged whereby highest voltage is impressed on the innermost bundle and lowest voltage is impressed on the outmost bundles. The bundles... | 11/06/1984 |
