Patent · US Active

Method for operating an electric machine

US9083269B2 · kind B2 · utility

2Cited by

3References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Marc Eschenhagen · Ludwigsburg, DE
Rasmus Rettig · Gerlingen, DE
Franziska Kalb · Fichtelberg, DE
Michael Merkle · Stuttgart, DE
Werner Schiemann · Fellbach, DE
Joachim Joos · Gerlingen, DE

Key dates

Filing date	Aug 10, 2011
Grant date	Jul 14, 2015
Priority date	—
Expiry date	Jan 27, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02N2300/106
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a circuit system for operating an electric machine are presented. The method is carried out in particular in a starting phase, a current being limited using a controllable resistor, the controllable resistor being implemented by at least one semiconductor switch, which is controlled using a clocked signal, and the signal being set in such a way that in shutdown phases, the at least one semiconductor switch is not completely shut down.

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