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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.:

US 9917545 B1

PDFFull Text
Date of Patent:
Mar. 13, 2018

Filed:

Mar. 02, 2016

Electric motor thermal protection using stator current measurements

Applicant:

Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);

Inventors:

Marcos A. Donolo, Pullman, WA (US);

Angelo D'Aversa, Ambler, PA (US);

Subhash C. Patel, West Chester, PA (US);

Vinod K. Yedidi, King of Prussia, PA (US);

Jianchun Qin, Ambler, PA (US);

Assignee:

Schweitzer Engineering Laboratories, Inc., Pullman, WA (US);

Attorney:

Richard M. Edge

Primary Examiner:

Mischita Henson

Assistant Examiner:

Christine Liao

Int. Cl.
CPC ...
G06F 19/00 (2018.01); H02P 29/60 (2016.01); G01R 31/34 (2006.01); H02H 7/08 (2006.01); G01R 19/175 (2006.01); G01R 19/25 (2006.01);
U.S. Cl.
CPC ...
H02P 29/60 (2016.02); G01R 31/343 (2013.01); H02H 7/0805 (2013.01); G01R 19/175 (2013.01); G01R 19/2513 (2013.01);
Abstract

Monitoring thermal conditions of an electric motor using current signals from power supplied to the motor is disclosed herein. The current signals may be used to calculate composite current values which may be used to calculate slip. The slip may be used to provide thermal monitoring and protection to the electric motor. Slip may be calculated using only values from the stator of the electric motor for providing thermal monitoring and protection to electric motors where rotor measurements are not available.

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Donolo, Marcos. (2018). Electric motor thermal protection using stator current measurements (U.S. Patent No. 9917545). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9917545

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