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:
Mar. 22, 2011
Filed:
Feb. 26, 2010
J. Stephen Thorn, Florissant, MO (US);
Bret S. Clark, Saint Louis, MO (US);
Joseph G. Marcinkiewicz, Saint Charles, MO (US);
Vinod Sadasivam, Saint Louis, MO (US);
Darko Marcetic, Saint Louis, MO (US);
Gregory M. Levine, Saint Louis, MO (US);
J. Stephen Thorn, Florissant, MO (US);
Bret S. Clark, Saint Louis, MO (US);
Joseph G. Marcinkiewicz, Saint Charles, MO (US);
Vinod Sadasivam, Saint Louis, MO (US);
Darko Marcetic, Saint Louis, MO (US);
Gregory M. Levine, Saint Louis, MO (US);
Emerson Electric Co., Saint Louis, MO (US);
Abstract
A system and method of determining the temperature of a rotating electromagnetic machine, such as an electric motor or generator. A temperature calibration parameter is calculated based on the temperature of an object situated close to the motor, such as a motor drive connected to the motor, and a first resistance value of the winding. In exemplary embodiments, the motor drive and first resistance value are determined only after the motor has been idle for some predetermined time period. Once the calibration parameter is calculated, the processor uses it along with subsequent resistance measurements to calculate the temperature of the motor.