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Bhavesh Patel

Benjamin Weber

Jens Tepper

Marcos Bockholt

Frank Cornelius

Burak Esenlik

Bruno Agostini

Rafael Murillo

Arthouros Iordanidis

Jasmin Smajic

Thorsten Steinmetz

Karl-Heinz Zillmann

Michael Luckey

Carlos Roy

Udo Chudobba

Jiahua Zhang

Exemplary embodiments relate to a system and method for monitoring functional operational reliability of a cooling system having at least one thermosyphon for transformers provided with at least one evaporator and with at least one condenser. The cooling system using a coolant which can be vaporized and a gaseous medium, as a heat carrier.

Method for function monitoring and/or control of a cooling system, and a corresponding cooling system

An exemplary arrangement includes blocks arranged between the inner winding, the individual barriers and the outer winding in order to maintain defined spacing's along the circumference. At least two coils are arranged axially one above the other on a common core limb. Each coil has at least two windings arranged radially one above the other and barriers are provided between the windings. The barriers of adjacent coils are radially offset with respect to one another, and the edge regions of the barriers engage one another in a comb-like manner.

Arrangement having at least two coils which are arranged axially one above the other on a common core limb

A transformer winding and a dry-transformer are disclosed, which include a main transformer winding, and a supplementary transformer winding configured to be electrically connected in series with the main transformer winding. The supplementary transformer winding can include a first winding module, a second winding module, and a third winding module, each of the winding modules having at least a first, a second and a third winding segment, and wherein each of the winding segments has a tap. A changer is configured to be connected to the taps of the second winding module, and wherein the second winding module is configured to be electrically connected in series to at least one winding segment of the first winding module and the third winding module.

Supplementary transformer winding

A single- or multi-phase dry-type transformer includes at least two coils. A barrier between phases made of an electrically insulating material is arranged in the intermediate space between the individual coils.

Single- or multi-phase dry-type transformer having at least two coils

At least two winding modules nested hollow-cylindrically one inside the other and extending around a common winding axis, wherein said winding modules are spaced radially apart from one another within at least one hollow-cylindrical cooling channel arranged therebetween by means of insulation strips, wherein the insulation strips have a cross-sectional form which avoid a surface profile radially with respect to the winding axis, the insulation strips including one of a fiber-reinforced epoxy, polyester resin, or from an unreinforced thermoplastic material.

Transformer winding with cooling channel

A transformer winding device, a method and a transformer are disclosed. The transformer winding winding device includes a rotary device configured to extend along an axis of rotation and configured to receive a transformer winding to be wound, at least one device configured to provide a plurality of insulation strips, and a comb-like guide device. The comb-like device is configured to deflect the plurality of insulation strips into at least one common winding plane and fed parallel to one another, at an angle to an axis of rotation, to the transformer winding to be wound. The comb-like guide device can include at least a first guide device element for a first group of insulation strips and a second guide device element for a second group of insulation strips, wherein the first and second guide device elements are offset with respect to one another in terms of axial length.

Winding device, winding method, and transformer winding

A transformer winding, having at least two multi-layered winding modules, which are connected electrically in series, extend about a common winding axis, and are nested one inside the other hollow-cylindrically, at least one cooling channel, which is arranged along the common winding axis hollow-cylindrically between the winding modules, and a flat electrical shield is provided within the at least one cooling channel at least sectionally along the radial circumference thereof, wherein the electrical shield extends over approximately the entire axial length and through which electrical shield the electrical capacitance distribution in the transformer winding connected electrically in series is influenced.

Transformer winding

An exemplary transformer winding including at least two hollow-cylindrical, axially adjacent winding modules, which are arranged about a common winding axis and have an electrical conductor wound in layers, and a common electrical insulting layer, through which the winding modules are enveloped. The insulating layer has at least one annular, radial depression or annular, radial elevation, which is salient transversely to the winding axis on the radial outer face of said insulating layer.

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Brilon, Germany

Bhavesh Patel