Invention Grant
- Patent Title: Low speed synchronous motor drive operation
- Patent Title (中): 低速同步电机驱动运行
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Application No.: US11856504Application Date: 2007-09-17
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Publication No.: US07880416B2Publication Date: 2011-02-01
- Inventor: Steven E. Schulz , Goro Tamai , Scott Thompson
- Applicant: Steven E. Schulz , Goro Tamai , Scott Thompson
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Ingrassia Fisher & Lorenz, P.C.
- Main IPC: H02P6/08
- IPC: H02P6/08

Abstract:
Methods and apparatus are provided for providing a torque boost in an electric motor system at low speeds. The electric motor system comprises an alternating current (AC) synchronous electric motor, an inverter and a controller. The inverter is coupled to the AC synchronous electric motor and provides electric control therefore. The controller is coupled to the inverter and provides operational control signals thereto for operation of the electric motor. The controller includes a torque command gain block which modifies a torque command to generate a boosted torque signal in response to a detected speed of the electric motor, the torque command modified to define the boosted torque signal defined in accordance with a torque dependent scaling factor calculated in response to the torque command.
Public/Granted literature
- US20090072778A1 LOW SPEED SYNCHRONOUS MOTOR DRIVE OPERATION Public/Granted day:2009-03-19
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