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, 2018
Filed:
Jan. 30, 2017
Applicant:
Trane International Inc., Davidson, NC (US);
Inventor:
William David Daugherty, III, Gladewater, TX (US);
Assignee:
Trane International Inc., Davidson, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 5/00 (2006.01); G05D 23/00 (2006.01); H02H 7/08 (2006.01); H02P 1/04 (2006.01); H02P 29/64 (2016.01); H02P 6/14 (2016.01);
U.S. Cl.
CPC ...
H02P 29/64 (2016.02); H02P 6/14 (2013.01);
Abstract
An apparatus and method for extending component life in a motor drive having a stator heating mode is disclosed. The current supplied to stator windings is cycled through a set of primary stator power transistors to increase the overall lifespan of the drive, thus preventing premature failure of the stator power transistors by splitting the workload between them, rather than having a single transistor supply the bulk of the stator heating current.