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:
Apr. 21, 2026
Filed:
Jun. 02, 2022
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Schaeffler Technologies AG & Co. KG, Herzogenaurach, DE;
Abstract
The present disclosure relates to a method for estimating a torque of an electric machine, comprising the following steps: estimating a first torque using a first method by forming a cross product from an estimated magnetic flux of the electric machine and an actual current of the electric machine, estimating a second torque using a second method by determining a power balance which can be calculated with the aid of a difference between an AC output power of an inverter, which is connected to the electric machine, and a total power loss of the electric machine, and determining the final torque as a weighted average from the first torque, which is weighted with a first weighting, and the second torque, which is weighted with a second weighting. The present disclosure also relates to a control unit for carrying out this method and to an electrical traction drive having such a control unit.