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:
Oct. 21, 2014
Filed:
Oct. 31, 2012
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Jesse Gerdes, Dunlap, IL (US);
Jackson Wai, Dunlap, IL (US);
Mark Hartman, Peoria, IL (US);
Ahmed Khalil, Peoria, IL (US);
Carlos Nino Baron, Peoria, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 6/00 (2006.01); H02P 6/18 (2006.01); H02P 25/08 (2006.01);
U.S. Cl.
CPC ...
H02P 6/182 (2013.01); H02P 25/083 (2013.01);
Abstract
A method of estimating an initial rotor position of a switched reluctance (SR) machine having a rotor and a stator is provided. The method may comprise the steps of driving a phase current in each of a plurality of phases of the SR machine to a predefined limit, performing an integration of a common bus voltage associated with each phase, determining a flux value for each phase based on the integrations, and determining the initial rotor position based on the flux values.