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7443273 |
Arrangement for cooling of components of wind energy installations
The system utilizes the flow of a medium for cooling an installation, especially a transformer. The fact is utilized that the flow of the medium, e.g. wind, automatically increases with increasing...
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7409849 |
Oil filtration system for plural phase power equipment tanks
Insulating oil in electric power generation, transmission and distribution equipment such as circuit breakers, regulators, phase shifters, tank diverter switches and capacitor banks for...
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7330095 |
Cooled multiphase choke assembly
A cooled multiphase choke assembly comprising a first coil (L 1 , L 2 , L 3 ) for each phase (U, V, W) and a first cooling element ( 11 ), each first coil (L 1 , L 2 , L 3 ) comprising several...
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7271696 |
Two part transformer core, transformer and method of manufacture
A toroidal transformer core topology having improved thermal and electrical properties has a two part core, one part concentrically disposed within the other, with the windings wound between the...
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7245197 |
Liquid-cooled choke
The invention relates to a liquid-cooled choke comprising a choke core ( 1 ), a choke coil ( 2 ) and a path ( 3 ) for a cooling liquid to cool the choke. The choke core ( 1 ) is divided into at...
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7205875 |
Hybrid air/magnetic core inductor
An inductor includes an elongate magnetic core, a coil wrapped around the core and a spacer that separates the coil from the core to provide a coolant passage between the coil and the core. The...
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7129808 |
Core cooling for electrical components
A cooling system is provided for electrical components in which cooling assemblies ( 11, 45 ) are inserted in non-magnetic cores of the electrical components, and in which tubes provide both inflow...
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7088210 |
Electromagnet having spacer for facilitating cooling and associated cooling method
An electromagnet and associated apparatus and method are provided. The electromagnet includes a core and at least one winding disposed circumferentially about the core such that the winding extends...
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7078994 |
Constant power and temperature coil
A coil apparatus is described that incorporates two or more conductors, wound in parallel, following the same path, in intimate physical contact throughout the path but electrically isolated. The...
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7075399 |
Liquid-cooled inductive devices with interspersed winding layers and directed coolant flow
A high-power, liquid-cooled, multi-layer winding inductive device that has a region of interspersed winding layers and directed coolant flow over the interspersed windings to improve heat transfer...
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7023312 |
Integrated cooling duct for resin-encapsulated distribution transformer coils
A dry-type, resin-encapsulated transformer coil that includes multiple layers formed from a length of conductive material, and multiple cooling ducts that are formed of thermoplastic material and...
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7002443 |
Method and apparatus for cooling magnetic circuit elements
An apparatus and method for providing cooling to a magnetic circuit element having a magnetic core disposed around a centrally located core support member having at least one core support member...
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6940380 |
Transformer/reactor
The present invention relates to a power transformer/reactor ( 14, 15, 16 ) for high voltages, comprising at least one winding having at least one current-carrying conductor. The winding comprises...
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6924723 |
Cooling system for magnetic field generating device
A magnetic field generating device comprising a frame about which a current carrying coil of conductor is wound. The frame preferably includes spaced-apart side panels and an auxiliary...
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6914195 |
Distribution transformer
An oil-filled pole-mounted distribution transformer comprises a tank housing a transformer core-coil assembly immersed in cooling oil. The tank is made of a corrosion-proof composite material and a...
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6909349 |
Apparatus and method for cooling power transformers
A system ( 27 ) for reducing the temperature of cooling oil for a power transformer ( 12 ) includes a heat exchanger ( 44 ) interposed in the cooling oil system. The heat exchanger ( 44 ) relies...
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6838968 |
Transformer with forced liquid coolant
In order to cool the windings, core and optionally the wall of the element ( 1 ) receiving the windings ( 3,4 ) and the core ( 2 ) as effectively as possible, conducting surfaces ( 5, 6, 8,15 ) are...
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6792666 |
Three-phase transformer
A three-phase transformer is presented comprising a magnetic circuit and three coil block. The magnetic circuit comprises two spaced-apart, parallel, plate-like elements; and three spaced-apart,...
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6717499 |
Transformer for gas insulated electric apparatus
Disclosed is a transformer for a gas insulated electrical apparatus which requires no grounding field and which provides high accuracy with a simple structure. A transformer includes a capacitor...
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6710691 |
Transformer with an associated heat-dissipating plastic element
A transformer with an associated heat-dissipating plastic element is provided. The transformer includes a hollow main body, a core, a coil and a heat-dissipating plastic element. The core is...
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6661327 |
Electromagnetic inductor and transformer device and method making the same
An electromagnetic inductor and transformer device and a method for making the same are disclosed. The device has a core that is separated into core sections along a dividing plane that extends...
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6661124 |
Linear motor coils assembly and method for manufacturing the same
In a linear motor coil assembly ( 12 ), and a method for manufacturing the same, a plurality of coils ( 14 ) are arranged in a line in a direction of movement and have respective coil axes...
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6635009 |
Magnetic field applicator for heating magnetic substances in biological tissue
A magnetic field applicator to heat magnetic substances in biological tissue, having a magnetic yoke with two pole shoes across from each other and separated from each other by a distance that...
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6563411 |
Current transformer with direct current tolerance
A current transformer for alternating current with direct current components is proposed, consisting of at least one transformer core with a primary winding and at least one secondary winding to...
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6563410 |
Small footprint power transformer incorporating improved heat dissipation means
A small footprint power transformer constructed so as to exhibit improved heat dissipation characteristics and an enhanced flow of a cooling medium. The transformer construction achieves small...
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6549110 |
Compensating device suitable for use in railway car transformers
A compensating device suitable for use in railway car transformers has at least one compensation receptacle in fluid communication connection with the interior of the housing of a transformer and...
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6515850 |
Module combined with an electromagnetic switch appliance
The present invention relates to a power supply control module for loads or motors, which is mounted as an addition under a main electromagnetic switch appliance (Ap) and having, in a casing ( 1 ),...
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6369680 |
Transformer
The invention relates to a mid-frequency high power transformer which is specially used as a welding transformer in resistance welding, comprising a primary winding penetrated by the limb of a...
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6278354 |
Planar transformer having integrated cooling features
A planar electromagnetic device, such as a planar transformer or planar inductor, is provided with features for cooling that are formed integrally with the windings of the planar device. In a...
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6278353 |
Planar magnetics with integrated cooling
A planar magnetic device including a planar conductive winding and planar cooling element is disclosed. The planar cooling element includes a number of cooling layers some of which may have...
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6268786 |
Shielded wire core inductive devices
The magnetic core of an inductive device is formed of a plurality of wires that extend through the inductive device, and beyond the electric windings. The ends of the wires are formed around the...
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6239681 |
Wire core for induction coils
The core for an induction coil is formed of a plurality of parallel wires that extend through the induction coil, and beyond the coil. The ends of the wires are formed around the induction coil,...
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6160464 |
Solid cast resin coil for high voltage transformer, high voltage transformer using same, and method of producing same
A dry-type transformer having an iron core, with high voltage and low voltage coils encapsulated in casting resin. The high and low voltage windings may be cast separately, or together. Either or...
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6157282 |
Transformer cooling method and apparatus therefor
This invention relates to a cooling system for a transformer. A winding defining a coil, including a duct having an open top and bottom, is sealed to a sleeve, thus forming a closed circulatory...
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6147580 |
Strip wound induction coil with improved heat transfer and short circuit withstandability
An improved low voltage winding for dry insulated transformer has its windings resin encapsulated. The winding is constructed with flexible sheet conductors wound coincident with an insulating...
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6072166 |
Method of operating an inductor
In a method of operating an inductor of a tapping device of a melt vessel, the inductor couples inductively during a working phase with an electrically conductive shaped component and is cooled by...
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6043472 |
Assembly of tapping device and inductor therefor
In a method of operating an inductor of a tapping device of a melt vessel, the inductor couples inductively during a working phase with an electrically conductive shaped component and is cooled by...
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6037555 |
Rotary contact circuit breaker venting arrangement including current transformer
A rotary contact circuit breaker having a venting arrangement to vent gasses operated by a short circuit interruption to a location substantially above the load strap of the breaker whereby...
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5973583 |
Core assembly for coil units and method for producing the same
A core assembly for coil units and a method for producing the same which can suppress a raise of temperature are provided. A secondary core (21) made of a ferrite includes a pair of core members...
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5954988 |
High voltage transformer of a microwave oven having a structure for radiating heat
A high voltage transformer of a microwave oven has a structure for radiating heat efficiently. The high voltage transformer comprises a core formed of a plurality of iron plates fixed together one...
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5936503 |
Controllable inductor
A controllable inductor including a tubular core, a main winding (1) surrounding the core, a control winding running substantially axially to the core and an element (3) surrounding the core and...
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5929737 |
Controllable inductor
A controllable inductor including at least one tubular core (10), a main winding (5) surrounding the core and a control winding (11) running substantially axially through said core and returning...
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5929599 |
Inductive coupling apparatus for charging an electric car
An inductive coupling apparatus charges a storage device in an electric car by means of an external power source apparatus. The inductive coupling apparatus includes a coil unit assembly comprising...
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5898353 |
Magnetic fluid cooler transformer
Convective cooling of a distribution transformer is enhanced by use of magnetic fluid which has a magnetically driven flow pattern in the form of a plurality of vertically stacked magnetic...
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5789712 |
Toroid holder
A holder for a toroid coil has a planar top surface for engagement by a vacuum pickup and four side walls extending to a mounting plane and defining a toroid containing space therewithin. Wire wrap...
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5736915 |
Hermetically sealed, non-venting electrical apparatus with dielectric fluid having defined chemical composition
An electrical apparatus, such as a transformer, includes an expandable internal chamber that is nonventing and completely and permanently sealed from the ambient environment. The chamber houses a...
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5660749 |
Transformer and A.C. arc welder
A transformer includes a stator core, primary coils, secondary coils, and heat radiating plates each of which projects outward from between interior layers of the primary coil and/or secondary...
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5651175 |
Method of forming a temperature duct spacer unit and method of making an inductive winding having a temperature sensing element
A method of securing a flexible temperature sensing element to a duct spacer element of the type which is commonly used in an electrical transformer includes steps of forming a groove in a surface...
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5621372 |
Single phase dry-type transformer
A single phase, dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with...
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5598137 |
Coil for high-voltage transformer
In order to achieve improved mechanical properties for a coil (1), it is proposed to structure a first electroconductive winding (3) of the coil (1) as a coil former. This coil has a first...
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