Patent · US Active

Method and apparatus for forming corona shielding

US9843246B2 · kind B2 · utility

0Cited by

4References

12Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Harald Griem · Spardorf, DE
Steffen Lang · Hallerndorf, DE
Friedhelm Pohlmann · Essen, DE
Christian Staubach · Marl, DE

Key dates

Filing date	Dec 30, 2013
Grant date	Dec 12, 2017
Priority date	—
Expiry date	May 26, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH02K15/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and device for forming corona shielding on a winding bar for high-voltage machines has end corona shielding in a first section and outer corona shielding in a second section that adjoins the first section. The method includes providing a first composition, including a carrier material and a first filler therein and a first electrical resistance; providing a second composition, including the same carrier material and a second filler therein and a second electrical resistance, wherein the first and second fillers contain an identical dopable semiconductor material, doping of which determines electrical resistance of the first and second fillers, and wherein the second resistance differs from the first resistance; applying the first composition in the first section to form the end corona shielding; and applying the second composition in the second section to form the outer corona shielding.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.