Invention Application
- Patent Title: SYSTEM AND METHOD OF OVERCOMING A DEAD-BAND IN A SWITCHED RELUCTANCE MOTOR
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Application No.: PCT/US2021/063177Application Date: 2021-12-14
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Publication No.: WO2022140102A1Publication Date: 2022-06-30
- Inventor: GERDES, Jesse R. , SOPKO, Thomas M. , NINO BARON, Carlos E. , WAI, Jackson , KHALIL, Ahmed , ABDUL, Sajan , ASHFAQ, Amara , THORNE, James Michael
- Applicant: CATERPILLAR INC.
- Applicant Address: 100 NE Adams Street
- Assignee: CATERPILLAR INC.
- Current Assignee: CATERPILLAR INC.
- Current Assignee Address: 100 NE Adams Street
- Agency: ANYASO, Uchendu O. et al.
- Priority: US17/132,076 2020-12-23
- Main IPC: B60L15/08
- IPC: B60L15/08 ; B60L50/10 ; B60L50/51 ; B60L50/60 ; B60L50/61 ; H02P6/185 ; H02P25/089 ; H02P21/13 ; H02P21/12
Abstract:
A work machine (100) includes a frame (110), a traction system (120) supporting the frame (110), a power source (130) mounted on the frame (110), a switched reluctance motor (205), an inverter (220) configured to control power to the motor (205) from a power source (130), and a controller (210). The controller (210) is configured to receive a signal indicating a desired torque (430) and determine if the desired torque (430) is between an upper threshold (410) and a lower threshold (420). If the desired torque (430) is between the upper threshold (410) and the lower threshold (420), pulse width modulation is used to produce a PWM adjusted torque command (450), and the motor (205) is commanded based on the PWM adjusted torque command (450). The PWM adjusted torque command (450) is configured to cycle between the upper threshold (410) and the lower threshold (420) to produce the desired torque (430).
Information query
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