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. 06, 2012
Enrico Fuchs, Reinsdorf, DE;
Thomas Götze, Chemnitz, DE;
Steffen Hellmich, Nanjing, CN;
Hans-georg Köpken, Erlangen, DE;
Stefan Völkel, Erlangen, DE;
Enrico Fuchs, Reinsdorf, DE;
Thomas Götze, Chemnitz, DE;
Steffen Hellmich, Nanjing, CN;
Hans-Georg Köpken, Erlangen, DE;
Stefan Völkel, Erlangen, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
A method for estimating a torque of a three-phase motor for a vehicle includes measuring a respective current strength in at least two of three phase lines, wherein the three-phase motor is supplied with power by a converter, and wherein the three phase lines lead from the converter to the three-phase motor of the vehicle, measuring a respective voltage at each of the three phase lines, determining a rotating field frequency as a function of the measured current strengths or the measured voltages; and determining an estimated value for the torque as a function of the measured current strengths, the measured voltages and the determined rotating field frequency.