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| Number | Title | Issue Date |
| 8044550 | Roebel bar for rotating electrical machines A Roebel bar for a rotating electrical machine includes a straight slot part disposed in a slot in an iron sheet of a stator of the rotating electrical machine and a bent yoke part adjacent to the straight slot part and protruding from the stator, wherein the bent y... | 10/25/2011 |
| 7741748 | Device for improving the protection of a construction unit against electrical corona discharges A device for improving the protection of a component against surface discharges includes a non-woven substrate made of fibers and configured to be electrically insulating and a coating containing silicon carbide (SiC) disposed on the substrate. ... | 06/22/2010 |
| 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 |
| 7355293 | Wave power assembly with an electromagnetic dampning means A wave power assembly comprising a hull and a linear electric generator. The rotor is connected to the hull and the stator is arranged to be anchored at a sea/lake bottom. The generator is provided with an electromagnetic damping means in order to keep the pulsation... | 04/08/2008 |
| 7336013 | High mechanical strength electrical connection system and method In accordance with one embodiment, the present technique provides a bushing that is configured to electrically and mechanically couple a conductor bar of a rotor assembly to an end ring of the rotor assembly. The exemplary bushing has an interior surface that is con... | 02/26/2008 |
| 7288062 | Apparatus for creating therapeutic charge transfer in tissue An apparatus for creating therapeutic charge transfer in tissue includes a coil. The coil generates a changing magnetic field to induct an electric field in the tissue exceeding 10 mV/cm when the coil is 5 cm from the tissue. Preferably, the magnetic field has a gro... | 10/30/2007 |
| 7268293 | Surface coating of lapped insulation tape An electrically insulated object 13 with a heat conduit at the interface between the layers of insulating tape 16. The tape 16 has been, surface coated with a high thermal conductivity (HTC) material, so that the interface between the layers of ... | 09/11/2007 |
| 7259491 | Rotating asynchronous converter A rotating asynchronous converter and a generator device having a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second frequency f2. The converter has a rotor... | 08/21/2007 |
| 7250700 | Arrangement for protecting an electric machine The object of the invention is an arrangement for an alternating-current machine that can be connected to an inverter and includes windings located in grooves and insulated from the plate core of the machine. According to the invention, an electrically conductive sh... | 07/31/2007 |
| 7211989 | Method for acceleration of a shaft run, as well as an apparatus for carrying out the method A method for acceleration of a shaft run that a turbine, in particular a gas turbine, a generator and an excitation machine connected to one another by a common shaft, includes accelerating the turbine is accelerated using acceleration apparatus during a starting pr... | 05/01/2007 |
| 7152306 | Method for installing a stator winding A method for installing a stator winding in a stator core. A winding turn is formed by drawing a cable portion from a cable reel and inserting it into two winding slots. Each winding turn that is jointlessly connected to first winding turn and has the same winding d... | 12/26/2006 |
| 7126235 | Wind power electric device and method A wind-power unit has a wind turbine has an electric generator connected to the wind turbine. The stator of the generator has a winding formed of a high-voltage cable having a core of conducting material, a first layer of semiconducting material surrounding the core... | 10/24/2006 |
| 7098551 | Wind power installation with contactless power transmitter A wind power installation for producing a sinusoidal ac voltage is disclosed. Briefly described, one embodiment comprises a generator having a generator rotor and a generator stator; a rotor unit with rotor blades which are connected to the generator rotor; and a po... | 08/29/2006 |
| 7088027 | Rotating asynchronous converter and a generator device The present invention relates to a rotating asynchronous converter and a generator device. The converter comprises a first stator connected to a first AC network with a first frequency f1, and a second stator connected to a second AC network with a second... | 08/08/2006 |
| 7078843 | Field assemblies and methods of making same An electric motor, power tool using the electric motor, and method of making the electric motor includes making a stator by separately forming pole pieces, return path pieces and field coils. The field coils are placed over necks of the pole path pieces and the retu... | 07/18/2006 |
| 7068015 | Wind power plant having magnetic field adjustment according to rotation speed A wind power plant where the driving shaft communicates with a synchronous generator (3) optionally through a gear (2) and with a transformer, if any, communicating through an AC/DC inverter 7 with an HVDC transmission cable 9. The synchr... | 06/27/2006 |
| 7061133 | Wind power plant The magnetic circuit of a generator in a wind power plant is arranged to directly supply a high supply voltage of 2-50 kV, preferably higher than 10 kV. The generator is provided with solid insulation and its winding includes a cable (6) comprising one or mor... | 06/13/2006 |
| 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 |
| 7019429 | Method of applying a tube member in a stator slot in a rotating electrical machine A method for mounting a tube in a space having a shape corresponding to the shape of the tube. The tube is inserted into the space, pressurized with a hot pressure medium causing the tube to expand until the space is filled, then a cold pressure medium is substitute... | 03/28/2006 |
| 6981308 | Support members inside stator slots of a rotating electric machine and method of mounting these support members A rotating electric machine (1) has a rotor, a stator (2), and stator windings (3, 4). The windings (3, 4) include high voltage cable drawn through slots (5, 6) in the stator (2). Support members (8) are arranged insi... | 01/03/2006 |
| 6972505 | Rotating electrical machine having high-voltage stator winding and elongated support devices supporting the winding and method for manufacturing the same A rotating electrical machine and method for making the machine, where the machine includes a high-voltage stator winding and elongated support devices for supporting the winding. The machine and method employ an arrangement of cable that is made of inner conductive... | 12/06/2005 |
| 6965183 | Architecture for electric machine The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be us... | 11/15/2005 |
| 6960859 | Roebel bar for an electrical machine and method for producing such a roebel bar A Roebel bar (10) for an electrical machine comprises a plurality of essentially parallel, transposed conductor elements (11, 12, 13), which, lying over and/or next to one another, form a bar with an essentially rectangular cross section, which is surr... | 11/01/2005 |
| 6940201 | Rotary electric machine having partially Δ-connected stator winding A vehicular alternator has a stator winding, in which a middle point of one phase winding is connected to a winding finish end of another phase winding in a cyclic manner among the three-phase windings. A Δ-connection portion is formed by a portion between the midd... | 09/06/2005 |
| 6940203 | Grounding and clamping member for stator coil A corona suppression apparatus for a dynamoelectric machine having a stator coil (12) covered with a corona suppression covering (16), the apparatus including a member (10) conducting to ground (20) abutting a top layer (28) of the... | 09/06/2005 |
| 6936947 | Turbo generator plant with a high voltage electric generator In a plant containing a turbo-generator the magnetic circuit of the turbo-generator is included in an electric generator which directly supplies a high supply voltage of 20-800 kV, preferably higher than 36 kV. The insulation of the generator is built up of a cable ... | 08/30/2005 |
| 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 |
| 6906447 | Rotating asynchronous converter and a generator device A rotating asynchronous converter for connection of AC network with equal or different frequencies employs a first stator connected to a first AC network with a first frequency and a second stator connected to a second AC network with a second frequency, and a rotor... | 06/14/2005 |
| 6894416 | Hydro-generator plant The magnetic circuit of a generator in a hydro-generator plant is arranged to directly supply a high supply voltage of 20-800 kV, preferably higher than 36 kV. The generator is provided with solid insulation and its winding includes a cable (6) comprising one... | 05/17/2005 |
| 6891303 | High voltage AC machine winding with grounded neutral circuit An electric high voltage AC machine intended to be directly connected to a distribution or transmission network (16) comprises at least one winding. This winding comprises at least one current-carrying conductor, a first layer having semiconducting properties... | 05/10/2005 |
| 6873080 | Synchronous compensator plant The magnetic circuit of a synchronous compensator plant is included in an electric machine which is directly connected to a high supply voltage of 20-800 kV, preferably higher than 36 kV. The electric machine is provided with solid insulation and its winding(s) is/a... | 03/29/2005 |
| 6836047 | Electric machine with low eddy current losses A rotating electric machine having a magnetic circuit which in one of the parts of a rotor and a stator of the machine comprises an element (1) having a slot for a winding of layers (14, 16) of cables (9) extending substantially axially and arra... | 12/28/2004 |
| 6831388 | Synchronous compensator plant The magnetic circuit of synchronous compensator plant is included in an electric machine which is directly connected to a high supply voltage of 20-800 kV, preferably higher than 36 kV. The electric machine is provided with solid insulation and its winding(s) is/are... | 12/14/2004 |
| 6822363 | Electromagnetic device An electromagnetic device comprises a magnetic field generating electrical circuit including a winding (1) having at least one electrical conductor (2). The winding comprises a solid insulation (4) surrounded by outer and inner layers (3, 5 | 11/23/2004 |
| 6798107 | Rotating electric machines with magnetic circuit for high voltage and method for manufacturing the same A rotating electric machine for direct connection to all types of high-voltage networks, in which the magnetic circuit adapted for high voltage comprises a rotor, stator and windings. The winding comprising a conductor surrounded by a solid insulation system. The in... | 09/28/2004 |
| 6744167 | Rotor of a turbogenerator The invention relates to a rotor (1) for a turbogenerator having a field winding (4) which is formed from hollow conductors (3), having a damper bar (8), having insulation (9) arranged between the damper bar and the field winding, ... | 06/01/2004 |
| 6498415 | High voltage stator coil having low loss insulator and electrode covering and method therefor A high voltage stator bar 20 (FIG. 7) is used in a power generation system and includes a core section having a core 32 and stator coil 23, including at least one coil involute. A ground wall insulation layer 40 overlies and surrounds the stator coil. An ... | 12/24/2002 |
| 6455974 | Combined Delta-Wye armature winding for synchronous generators and method A polyphase electric generator (10) is disclosed having a fixed output voltage configurable to virtually any voltage level within a certain range of voltages. The armature winding (18) of the generator is arranged in a combined Delta and Wye topology (60,... | 09/24/2002 |
| 6420812 | High voltage generator stator coils and methods of forming same The present invention provides a high voltage generator stator coil for power generation systems for preventing partial discharge. The high voltage generator stator coil preferably includes a plurality of metal strands that form a high voltage conductor, ... | 07/16/2002 |
| 6417593 | Composite electrical insulation with contacting layer and method of making the same An insulating material (10) for an electrical generator rotor and method of forming the same. An insulating substrate (12) is formed from a single layer of woven glass fabric (16) having a necessary thickness and coated with a thermosetting resin (18). A ... | 07/09/2002 |
