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:
Apr. 10, 2018
Filed:
Jun. 09, 2017
Caterpillar Inc., Peoria, IL (US);
Jason L. Miller, Princeville, IL (US);
Ernesto Inoa, Glendora, CA (US);
Jesse Gerdes, Dunlap, IL (US);
Alexander C. Crosman, III, Dunlap, IL (US);
Carlos E. Nino-Baron, Edwards, IL (US);
Thomas Michael Sopko, Jr., East Peoria, IL (US);
Jackson Wai, Dunlap, IL (US);
Ahmed Khalil, Dunlap, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A control system for a switched reluctance (SR) motor includes a Direct Current (DC) power source, and an inverter. The control system includes a user interface configured to enable an operator to specify a desired torque output. The control system further includes a controller which converts a DC current from the Alternating Current (AC) supplied to the SR motor by the inverter. The controller estimates an actual power output generated by the SR motor based on a DC voltage supplied by the DC power source to the inverter, and the converted DC current. The controller estimates an actual torque output based on the actual power output and a rotational speed of the SR motor. The controller compares the actual torque output and a desired torque output to calculate a torque error. The controller adjusts a torque output limit and the rotational speed of the SR motor.