公开(公告)号：US09941831B1

公开(公告)日：2018-04-10

申请号：US15618184

申请日：2017-06-09

Applicant: Caterpillar Inc.

Inventor： Jason L. Miller ,  Ernesto Inoa ,  Jesse Gerdes ,  Alexander C. Crosman, III ,  Carlos E. Nino-Baron ,  Thomas Michael Sopko, Jr. ,  Jackson Wai ,  Ahmed Khalil

IPC: H02P25/08 ,  H02P6/08 ,  E02F9/20

CPC classification number: H02P25/08 ,  E02F9/207 ,  H02P6/08 ,  H02P2203/01

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.