Patent · US Active

Circuit arrangement for limiting the overvoltage of an excitation winding of a synchronous machine having rapid de-excitation

US9059584B2 · kind B2 · utility

4Cited by

3References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stefan Spannhake · Berlin, DE
Jochen Fassnacht · Calw, DE
Hans-Peter Mueller · Reutlingen, DE

Key dates

Filing date	Jan 12, 2011
Grant date	Jun 16, 2015
Priority date	—
Expiry date	Jan 3, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2207/05
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A circuit arrangement for de-exciting an excitation winding of a synchronous machine in the event of a fault, including a control circuit for controlling a current flow through the excitation winding, it being possible to apply a positive control voltage to the excitation winding for excitation and a negative control voltage for rapid de-excitation, and including a protective circuit which is parallel-connected to the excitation winding and which does not permit a current flow over the protective circuit in the event of rapid de-excitation and which forms a current path for limiting the voltage and de-exciting the excitation winding if at least one connecting line between the control circuit and the excitation winding is interrupted.

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