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Match Document Document Title
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 f 1 , and a second stator connected to a second AC network with...
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...
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 f 1 , and a...
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...
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...
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 )....
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
6768240 Method of making a dynamoelectric machine conductor bar and method of making a conductor bar dynamoelectric machine, the bar and the machine  
A method for making a dynamoelectric machine conductor bar, compromises providing a plurality of bundled together spiraling strand conductors having surrounding insulation to define a substantially...
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...
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...
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...
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...
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...
6359232 Electrical insulating material and stator bar formed therewith  
Resin-impregnated sheet materials, such as fabrics, films, paper and tapes, for forming electrical insulation that exhibits significantly improved voltage endurance performance. The present...
6278217 High voltage generator stator with radially inserted cable windings and assembly method  
A stator for a high voltage generator has cable windings that are radially inserted into the stator slots. The stator is assembled as the cable windings are laid into the stator slots. The stator...
6181042 Method for preventing corona surface damage in end windings of air-cooled motors and generators  
An end winding (10) of a high voltage air-cooled ac generator or motor is made more resistant to surface deterioration by corona activity by using a paint whose binder contains at least 20% by...
6140733 Conductor winding configuration for a large electrical machine  
A conductor winding configuration for a large electrical machine has a supporting body and at least one winding element. The at least one winding element is inserted into an associated slot in the...
6130496 Stator coil for rotary electric machine  
A stator coil for a rotating electrical machine having a ground wall insulation of a stator coil impregnated with a resin, maintaining a releasing characteristic between the ground wall insulation...
6130495 Supporting element for an electric winding, turbogenerator and method of producing a corona shield  
A supporting element or core stack for an electric winding, in particular for a stator of a turbogenerator, includes a supporting surface to which an electric conductor can be attached. The...
6121707 Electric motor and electric motor stator and method for making same  
A technique for forming stator coils for an electric motor is disclosed. The technique includes forming D-shaped or generally trapezoidal coils having a closed loop defining a long side and a short...
6075303 High-voltage insulated stator winding  
In a high-voltage insulated stator winding having at least one stator winding bar (10) for an electrical machine, which stator winding bar (10) is surrounded by winding insulation (13) which...
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...
5969456 Electromagnetic equipment  
An electromagnetic equipment such as dynamoelectric machine includes an electromagnetic coil formed by winding an insulated wire. The insulated wire is made of a bare conductor having, on its...
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...
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...
5886443 Spark suppression of induction type rotors of dynamoelectric machines  
A rotor for an induction motor of the squirrel cage type wherein the rotor bars are exposed to a resilient anti-sparking compound in the rotor slots of the machine. The rotor bars are provided with...
5821652 Dynamoelectric machines with shaft voltage prevention method and structure  
Damaging shaft voltages in an induction motor are prevented by an electrostatic shield between the stator winding structure and the rotor structure. The electrostatic shield is held at the same...
5708315 Stretchable coil wrapper for a dynamoelectric machine  
Stator bars and stator coils (winding elements) for a large dynamoelectric machine which are to be permanently placed in the slots of the magnetic core of the machine are wrapped so as to be...
5319276 Corona-shielding arrangement for the stator winding of an electric machine  
The corona-shielding arrangement for the stator winding of an electric machine, comprising a semiconductive textile corona-shielding strip wound around the major insulation of slot portion and end...
4831303 Coil armor tape for new bonding surface and CORONOX seal  
Improved turbine generators including stator coil bracing and methods for bonding stator coils to diamond spacers to reduce the leakage of Corona suppressive compositions, such as CORONOX®, are...
4760296 Corona-resistant insulation, electrical conductors covered therewith and dynamoelectric machines and transformers incorporating components of such insulated conductors  
Resinous compositions used as electric insulation have unique corona-resistance increased from 10- to 100-fold or more by the addition of organoaluminate, organosilicate or fine alumina or silica...
4738318 Electrical stress control  
An arrangement for and method of limiting the electrical stress in a region of high electric field strength associated with high voltage equipment, especially power cables, employs two overlapping...
4403163 Conductor bar for electric machines and method of manufacture thereof  
Conductor bar for electric machines operating at high voltage, including at least two subconductor packets being disposed side by side and being formed of mutually insulated subconductors, the...
4388546 Arrangement for controlling the internal potential in generator rods  
Arrangement for controlling the internal potential in generator rods by means of a band consisting of semi-conductive web, which is wound helically about the wiring assembly composed of insulated...
4347454 Stator winding for an electric machine  
The bars or coils of the stator winding of an electric machine are provided, in the region of the slots, with one or more additional wrappings having a larger cross-section than the slot. These...
4207482 Multilayered high voltage grading system for electrical conductors  
An insulated electrical member is made, having in combination, an electrical member covered with insulation and a conducting varnish, where an abrasion resistant stress grading system covers at...
3975653 Creeping discharge and partial discharge prevention means for a coil end of a rotary electric machine  
A creeping discharge and partial discharge-prevention means for a stator coil end of a rotary electric machine is disclosed. It includes an grounding electrode on an insulator of the stator coil...
3896406 Screen for core legs for transformers, reactors and the like  
In order to prevent the occurrence of glow discharge at sharp corners and edges of core legs for transformers, reactors and the like which are formed of a plurality of sheets, tape is wound around...
3891880 High voltage winding with protection against glow discharge  
An insulated high-voltage winding of an electrical machine is protected against glow discharge by application thereto of a wound-on tape of semi-conductive material which has been pre-stretched in...
3886387 Flux shield for dynamoelectric machines  
An arrangement is provided for preventing leakage flux from intersecting the end flanges and the stator core of dynamoelectric machines. An annular flux shield is attached to, but electrically...
Matches 1 - 50 out of 60 1 2 >