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. 13, 2001
Filed:
Jun. 27, 2000
Applicant:
Inventors:
Sergey Gennadievich Semenov, St. Petersburg, RU;
Alexander Timofeevich Zaremba, Dearborn Heights, MI (US);
Assignee:
Ford Global Technologies, Inc., Dearborn, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 5/40 ;
U.S. Cl.
CPC ...
H02P 5/40 ;
Abstract
A speed sensorless controller for an induction motor with rotor resistance estimation, using stator currents and voltages. The rotor resistance and speed estimation are obtained as a solution of a linear algebraic system with pseudo current and voltage signals and their observable derivatives as inputs. The proposed scheme provides accurate, real-time estimation of the speed and rotor time constants in all motor operational modes. It can also be used for real-time motor tuning if a speed signal is available.