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:
Feb. 20, 2018
Filed:
Feb. 10, 2016
Caterpillar Inc., Peoria, IL (US);
Seok-hee Han, Dunlap, IL (US);
Jackson Wai, Dunlap, IL (US);
Ahmed Khalil, Dunlap, IL (US);
Ernesto Inoa, Dunlap, IL (US);
Sangameshwar Sonth, Peoria, IL (US);
Jesse Gerdes, Dunlap, IL (US);
James Michael Thorne, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A control system for a switched reluctance (SR) machine having a rotor and a stator is provided. The control system may include a converter circuit in electrical communication between the stator and a common bus, and a controller configured to monitor a bus voltage of the converter circuit and a phase current of the SR machine. The controller may be configured to determine a phase voltage based on one or more of main pulses and any diagnostic pulses, determine an estimated flux based on the phase voltage and an associated mutual voltage, determine a rotor position based at least partially on the estimated flux, and control the SR machine based on the rotor position and a desired torque.