Invention Grant
- Patent Title: Method and apparatus for controlling motor torque
- Patent Title (中): 用于控制电机转矩的方法和装置
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Application No.: US12788030Application Date: 2010-05-26
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Publication No.: US08519662B2Publication Date: 2013-08-27
- Inventor: Haihui Lu , David M. Messersmith
- Applicant: Haihui Lu , David M. Messersmith
- Applicant Address: US OH Mayfield Heights
- Assignee: Rockwell Technologies, Inc.
- Current Assignee: Rockwell Technologies, Inc.
- Current Assignee Address: US OH Mayfield Heights
- Agency: Boyle Fredrickson, S.C.
- Agent William R. Walbrun; John M. Miller
- Main IPC: H02P1/24
- IPC: H02P1/24

Abstract:
The subject matter disclosed herein describes a system for controlling torque in a soft starter. In particular, torque ripple is reduced when transitioning between two different operating modes of a soft starter. A soft starter may include a first operating mode, designed for improved performance during low-speed operation of a motor, and a second operating mode, designed for improved performance during high-speed operation of the motor. However, transitioning between two different operating modes may result in significant transient currents in the motor, which, in turn, produce torque in the motor. The system described herein reduces this transient torque production in the motor.
Public/Granted literature
- US20110291596A1 Method and Apparatus for Controlling Motor Torque Public/Granted day:2011-12-01
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