Patent · US Active

Method for ascertaining a position of a rotor of an electrical machine

US9885590B2 · kind B2 · utility

0Cited by

15References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Henning Hermes · Wolfach, DE
Florian Schmitt · Bonn, DE
Ulrich Foerch · Ludwigsburg, DE
Udo Schulz · Gießen, DE
Tobias Friedl · Echterdingen, DE
Ulf Mueller · Schwieberdingen, DE
Achim Jenne · Oberaichen, DE

Key dates

Filing date	Jul 25, 2016
Grant date	Feb 6, 2018
Priority date	—
Expiry date	Jul 25, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02P9/009
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for ascertaining a position of a rotor relative to a stator of an electrical machine having a permanently excited rotor and a plurality of windings for the stator or vice versa; in response to an energization of at least one of the windings, a change in an inductance of the winding being ascertained; and, on the basis of the change in the inductance of the winding, the position of the rotor being ascertained relative to the stator.

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