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:
Jul. 08, 2014
Filed:
Jun. 11, 2012
Jesse Gerdes, Dunlap, IL (US);
James Siegle, Peoria, IL (US);
Mark Hartman, Peoria, IL (US);
Aaron Luther Thomas, Dunlap, IL (US);
Jackson Wai, Dunlap, IL (US);
Jesse Gerdes, Dunlap, IL (US);
James Siegle, Peoria, IL (US);
Mark Hartman, Peoria, IL (US);
Aaron Luther Thomas, Dunlap, IL (US);
Jackson Wai, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A control system for a switched reluctance (SR) machine is provided. The control system may include a converter circuit that is operatively coupled to the SR machine, and a controller in communication with the converter circuit. The controller may be configured to execute two or more processes in parallel, wherein the processes include generating a torque command based on one or more of bus voltage, machine current, rotor speed and rotor position, determining a first set of current control parameters based on the torque command and the rotor speed, determining a second set of current control parameters based on one or more of the torque command, the rotor speed and the rotor position, selecting one of the first and second sets of current control parameters based on the rotor speed, and operating the gates according to the selected set of current control parameters.