Invention Application
- Patent Title: SYSTEM AND METHOD OF OVERCOMING A DEAD-BAND IN A SWITCHED RELUCTANCE MOTOR
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Application No.: US17132076Application Date: 2020-12-23
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Publication No.: US20220200501A1Publication Date: 2022-06-23
- Inventor: Jesse R. Gerdes , Thomas M. Sopko , Carlos E. Nino Baron , Jackson Wai , Ahmed Khalil , Sajan Abdul , Amara Ashfaq , James Michael Thorne
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Main IPC: H02P23/30
- IPC: H02P23/30 ; E02F9/20

Abstract:
A work machine includes a frame, a traction system supporting the frame, a power source mounted on the frame, a switched reluctance motor, an inverter configured to control power to the motor from a power source, and a controller. The controller is configured to receive a signal indicating a desired torque and determine if the desired torque is between an upper threshold and a lower threshold. If the desired torque is between the upper threshold and the lower threshold, pulse width modulation is used to produce a PWM adjusted torque command, and the motor is commanded based on the PWM adjusted torque command. The PWM adjusted torque command is configured to cycle between the upper threshold and the lower threshold to produce the desired torque.
Public/Granted literature
- US11811344B2 System and method of overcoming a dead-band in a switched reluctance motor Public/Granted day:2023-11-07
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