Ge Renewable Technologies

Alstom Renewable Technologies

Markus Huwyler

Andreas Koepfler

Thomas Klamt

Andreas Köpfler

Alexander Anderton

Armin Fubel

A conductor bar for a stator winding of a rotating electrical machine includes a bundle of parallel conductor strands extending between two ends of the conductor bar and spaced apart by interspaces. A main insulation is wound around the bundle of conductor strands and a stack separators fills at least part of the interspaces. Protection elements are between the bundle of conductor strands and the main insulation. At least one of the protection elements or the stack separators are configured to compensate, at least in part, thermal expansion of the conductor elements when temperature changes.

Conductor bar

The present disclosure relates to a method for fabrication of a conductor bar and to a use of a conductor tape with applied putty for the fabrication of a conductor bar. Described is a method for fabrication of a conductor bar including, applying a putty at one side of a conductor tape, applying a release foil at the other side of the putty opposed to the conductor tape, removing the release foil before applying the conductor tape to the narrow side of the conductor bar, providing a pressing mold with rounded edges at the inner side of the pressing mold, surrounding the conductor bar with putty and conductor tape with the pressing mold, and hot pressing the conductor bar with the pressing mold.

Method for fabrication of a conductor bar

An insulating cap is provided for an end winding of an electrical machine working at a high voltage, the end winding including a plurality of insulated winding bars protruding from respective winding slots and electrically conductively connected to one another in pairs at their ends so as to form a plurality of electrical connections. The cap includes an opening allowing the insulating cap to be pushed over a region of one of the electrical connections such that the insulating cap insulates an outside of the electrical connection. An interior includes a layer configured to gradually dissipate a high electrical field in the region of the electrical connection to an outside of the insulating cap, the outside of the insulating cap being at earth potential.

Growing community of inventors

Muri, Switzerland

Markus Huwyler