公开(公告)号：US10897217B2

公开(公告)日：2021-01-19

申请号：US16107623

申请日：2018-08-21

申请人： Caterpillar Inc.

发明人： Ahmed Khalil ,  Sam Han ,  James Thorne ,  Jesse Gerdes ,  Jackson Wai ,  Carlos Nino Baron ,  Sajan Abdul

IPC分类号： H02P6/182 ,  H02P25/089 ,  H02P25/092

摘要： A device may receive a current measurement of a motor identifying a plurality of component currents associated with a plurality of phases. The device may determine a position estimate for the motor based on the plurality of component currents associated with the plurality of phases. The device may control the motor based on the plurality of component currents.

公开(公告)号：US10715052B2

公开(公告)日：2020-07-14

申请号：US16109277

申请日：2018-08-22

申请人： Caterpillar Inc.

发明人： Ahmed Khalil ,  Jackson Wai ,  Jesse Gerdes ,  James Thorne ,  Amir Saad

IPC分类号： H02P29/024 ,  H02M7/537 ,  H02P27/06

摘要： An electrical inverter may include a plurality of phase modules to provide a plurality of phase outputs. Two or more of the plurality of phase modules may share a common insulated-gate bipolar transistor.

公开(公告)号：US20200067422A1

公开(公告)日：2020-02-27

申请号：US16109277

申请日：2018-08-22

申请人： Caterpillar Inc.

发明人： Ahmed Khalil ,  Jackson Wai ,  Jesse Gerdes ,  James Thorne ,  Amir Saad

IPC分类号： H02M7/537 ,  H02P27/06

摘要： An electrical inverter may include a plurality of phase modules to provide a plurality of phase outputs. Two or more of the plurality of phase modules may share a common insulated-gate bipolar transistor.

公开(公告)号：US10938332B1

公开(公告)日：2021-03-02

申请号：US16594797

申请日：2019-10-07

申请人： Caterpillar Inc.

发明人： Ahmed Khalil ,  James Thorne ,  Jackson Wai ,  Amara Ashfaq ,  Jesse Gerdes

IPC分类号： H02P25/08 ,  H02P25/092 ,  H02P23/14 ,  H02P25/089 ,  H02P9/00

摘要： A control system that includes a converter circuit and a control device is disclosed. The converter circuit may be configured to control a phase current of a switched reluctance machine. The control device may be configured to determine an estimated flux based on a bus voltage, a phase voltage, and a mutual voltage. The control device may be configured to determine a flux threshold based on the phase current, and determine a first limit and a second limit relative to the flux threshold. The first limit and the second limit may be scaled relative to the flux threshold based on one or more of the target speed, the load demand, or the bus voltage. The control device may be configured to compare the estimated flux with the first limit, and reset the estimated flux to the second limit based on determining that the estimated flux satisfies the first limit.