Patent · US Active

Electric machine having a potential equalization device

US10090739B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Istvan Deak · Ludwigsburg, DE
Bernd Schroeder · Eßlingen, DE

Key dates

Filing date	Dec 9, 2015
Grant date	Oct 2, 2018
Priority date	—
Expiry date	Jul 10, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02K13/003
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric machine having a stator (3) and a rotor (4) mounted rotatably by means of a rotor shaft (5) and having a potential equalization device containing a resistor element for breaking down shaft voltages occurring at the rotor shaft (5), the resistor element contacting on the one hand a bus bar (24) of a slip ring module (20) and on the other hand the rotor shaft (5) at contact points, the resistor element being an electrical resistor (30; 46) provided with electrical connection elements (31, 32; 47, 48). At least one connection element (32; 47) of the electrical resistor (30; 46) is electrically conductively connected to the potential of the rotor shaft (5) via a pressure contact by a pressure element.

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