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. 15, 2017
Filed:
Feb. 19, 2014
Applicants:
Whitney M. Marohl, Moline, IL (US);
Long Wu, Fargo, ND (US);
Anthony Weber, Moline, IL (US);
Inventors:
Assignee:
DEERE & COMPANY, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 1/46 (2006.01); H02P 1/50 (2006.01); H02P 3/18 (2006.01); H02P 6/00 (2016.01); H02P 23/00 (2016.01); H02P 25/00 (2006.01); H02P 27/00 (2006.01); H02P 23/14 (2006.01); H02P 21/22 (2016.01); H02P 29/66 (2016.01); H02P 25/022 (2016.01);
U.S. Cl.
CPC ...
H02P 23/14 (2013.01); H02P 21/22 (2016.02); H02P 23/0077 (2013.01); H02P 29/662 (2016.11); H02P 25/022 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7258 (2013.01);
Abstract
At least one example embodiment discloses a method of controlling an alternating current (ac) machine. The method includes determining or retrieving a current limit for the ac machine, determining a characterized peak current value based on a voltage-to-speed ratio of the ac machine, determining current command values for the ac machine based on at least one of the torque command limit and a torque command for the ac machine, determining current command values for the ac machine based on the torque command limit and controlling the ac machine based on the current command values.