Siemens Aktiengesellschaft

Siemens Aktiengesell Schaft

Alexander Litinsky

Guido Schmidt

Christian Staubach

Steffen Lang

Bernhard Klaussner

Christian Schulz-Drost

Florian Eder

Friedhelm Pohlmann

Mario Brockschmidt

Klaus Schaefer

Jiri Lang

Andrey Mashkin

Klaus Schäfer

Bora Kocdemir

Simon Voss

Rene Höhner

The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system for an electrical machine. For example, a corona shielding system may include: an outer corona shield and an overhang corona shielding. The outer corona shielding and the overhang corona shielding may comprise a first corona shielding material having a nonlinear field strength-dependent electrical resistance.

Corona shielding system for an electrical machine

The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system, especially for an electrical machine, e.g., a high-voltage machine, such as a generator for generation of electrical energy, an electric motor, or another piece of electrical equipment having a relatively high rated voltage, e.g., a transformer or a bushing or a cable. A corona shielding system may include: a polymeric matrix; and filler particles comprising mica surrounded by a layer of at least one ceramic metal oxide. The filler particles may be distributed throughout the polymeric matrix.

Corona shielding system and electrical machine

A corona shielding paper for use in a corona shielding system for an electric machine, e.g. a high-voltage machine, may be produced by compacting partial discharge-resistant, planar, conductive particles but can include both reinforcement fibers and a woven fabric.

Conductive corona shielding paper, in particular for outer corona shielding

The present disclosure relates to electrical machines. The teachings thereof may be embodied in a corona shielding system, especially an outer corona shielding system, for an electrical machine. For example, a corona shielding system may include: a polymeric matrix; particles disposed in the matrix, including a mica-coated core and a layer of metal oxide disposed on the core; and a surface functionalization material disposed on a surface of the particles for binding to the matrix.

A corona shielding system for a high voltage machine including a sleeve for a live conductor of the high voltage machine, wherein the sleeve has an electrically conductive lacquer, wherein a filler is added to the conductive lacquer, the filler at least partially including a thermoexpanding filler, is provided. A repair lacquer and a method for production is further provided.

Corona shielding system for a high-voltage machine, repair lacquer, and method for production

A corona shielding system for an electric machine, for example a high-voltage machine, such as a generator, for generating electrical energy, an electric motor or else other electric operating means having a relatively high rated voltage, such as transformers, bushings, cables, etc, is disclosed. The corona shielding system may include a filler mixture including both planar and spherical particles. Therefore, the electrical conductivity, which is good in the presence of only planar particles in two spatial directions but is very poor in the third, can be adjusted anisotropically in a targeted manner.

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Duesseldorf, Germany

Alexander Litinsky