The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 2015
Filed:
Jul. 09, 2009
Applicants:
Ulrich Vollmer, Bissingen, DE;
Matthias Bitzer, Stuttgart, DE;
Inventors:
Ulrich Vollmer, Bissingen, DE;
Matthias Bitzer, Stuttgart, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 7/09 (2006.01); H02P 6/00 (2006.01); G01K 17/00 (2006.01); G01K 7/42 (2006.01); H02P 29/00 (2006.01);
U.S. Cl.
CPC ...
G01K 7/42 (2013.01); H02P 29/0044 (2013.01); H02P 29/0066 (2013.01); G01K 2205/00 (2013.01);
Abstract
A method for ascertaining the rotor temperature of a permanent-magnet synchronous machine (), in which a first estimate (T) 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 (). A second estimate (T) for the rotor temperature is ascertained via a Kalman filter containing a thermal model of the synchronous machine (), the first estimate (T) for the rotor temperature being supplied at least intermittently to the Kalman filter.