Patent · US Active

Method and device for ascertaining the rotor temperature of a permanent-magnet synchronous machine

US8947029B2 · kind B2 · utility

0Cited by

5References

17Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Ulrich Vollmer · Weilheim, DE
Matthias Bitzer · Stuttgart, DE

Key dates

Filing date	Jul 9, 2009
Grant date	Feb 3, 2015
Priority date	—
Expiry date	Mar 23, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG01K2205/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for ascertaining the rotor temperature of a permanent-magnet synchronous machine (10), in which a first estimate (TR1) for the rotor temperature is ascertained as a function of a remanent flux density of permanent magnets contained in a rotor of the synchronous machine (10). A second estimate (TR2) for the rotor temperature is ascertained via a Kalman filter containing a thermal model of the synchronous machine (10), the first estimate (TR1) for the rotor temperature being supplied at least intermittently to the Kalman filter.

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