Abb Research Ltd.

J&ouml;rg Oesterheld

Thomas Baumann

Reinhard Joho

Reinhard Fried

A winding bar ( ) for a high-voltage winding, for example a stator winding of an electric machine, includes a plurality of conductors ( ) which are arranged above and/or next to one another in a conductor bundle. The conductor bundle has a rectangular cross section. The conductor bundle is surrounded by an insulation ( ). An overall improved electric strength is achieved at the edges without changing the insulation thickness because a thickness (d ) of the insulation ( ) on the edges ( ) of the winding bar ( ) is greater than the thickness ( ) of the insulation ( ) on the flat sides of the winding bar ( ). Preferably, a calibration process is used to shape the edge region.

Winding bar for the high-voltage winding of an electric machine, and a method for producing such a winding bar

The present invention relates to a reinforced, pressure-resistant flexible tube for mechanical end-winding support for rotating electrical machines. The flexible tube according to the invention in this case comprises a glass fiber bundle which is encased by an inner glass cloth flexible tube. This glass cloth flexible tube is in turn externally coated with a polymer layer and is for its part surrounded by an outer glass cloth flexible tube. A matrix polymer is introduced into the inner glass cloth flexible tube and, after it has cured, the reinforced, pressure-resistant flexible tube can carry out its supporting and spacing function fully.

Reinforced, pressure-resistant flexible tube for mechanical end-winding support for rotating electrical machines

In an elastic insulating material element for wedging a winding, in particular the stator winding, of an electric machine in the slots provided for this purpose in a laminated body, good mechanical and, at the same time, electric properties are achieved in that the insulating material element (,) has a striplike metal spring core (,) which is surrounded on all sides by a casing (,) made of an insulating material.

Growing community of inventors

Fislisbach, Switzerland

Jörg Oesterheld

Growing community of inventors

Fislisbach, Switzerland

J&ouml;rg Oesterheld

Jörg Oesterheld