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:
Nov. 19, 2013
Filed:
Aug. 09, 2011
Sebastian Villwock, Pechbrunn, DE;
Heiko Zatocil, Nuremberg, DE;
Sebastian Villwock, Pechbrunn, DE;
Heiko Zatocil, Nuremberg, DE;
Baumuller Nurnberg GmbH, Nuremberg, DE;
Abstract
Identification of electrical equivalent circuit parameters () of a three-phase asynchronous motor () without a shaft encoder. The method comprises—Assumption of a standstill position of the rotor ();—Equidirectional test signal infeed U, Uin α and β in the stator axis direction of the asynchronous motor ();—Measuring of a measuring signal I, Iof the α and β axial direction of the asynchronous motor (); and—Identification of equivalent circuit parameters of the asynchronous motor () on the basis of the test signal voltages U, Uand of the measuring signal currents I, I; whereby the test signal feed allows the rotor () to remain torque-free. Determination of equivalent circuit parameters () of an asynchronous motor () as well relates to a motor control device (), whereby the identified equivalent circuit parameters () can be used for the determination, optimization and monitoring of a motor control and for control of electrical drives.