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:
Aug. 30, 2016
Filed:
Apr. 29, 2014
Applicant:
General Electric Company, Schenectady, NY (US);
Inventors:
Pinjia Zhang, Clifton Park, NY (US);
Prabhakar Neti, Rexford, NY (US);
Patel Bhageerath Reddy, Niskayuna, NY (US);
Assignee:
General Electric Company, Niskayuna, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 23/00 (2006.01); H02P 25/00 (2006.01); H02P 27/00 (2006.01); H02P 23/08 (2006.01); H02P 23/14 (2006.01); H02P 27/02 (2016.01);
U.S. Cl.
CPC ...
H02P 23/08 (2013.01); H02P 23/14 (2013.01); H02P 23/16 (2016.02); H02P 27/026 (2013.01);
Abstract
A method for estimating a speed of an induction motor includes applying a voltage to the induction motor and measuring a current of the induction motor. A current fast fourier transform (FFT) of the current is then determined and a slip of the induction motor is calculated based on the current FFT. A speed of the induction motor is then estimated based on the slip of the induction motor.