Electricity: motive power systems – Synchronous motor systems – Brushless motor closed-loop control
Reexamination Certificate
2011-05-31
2011-05-31
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Synchronous motor systems
Brushless motor closed-loop control
C318S400070, C318S432000, C318S434000
Reexamination Certificate
active
07952308
ABSTRACT:
Methods and apparatus are provided for reducing torque ripple in a permanent magnet motor system comprising a permanent magnet motor coupled to an inverter. The method comprises the steps of receiving a torque command, generating a torque ripple reduction signal in response to the torque command, modifying operational control signals in response to the torque ripple reduction signal to generate reduced ripple operational control signals, and providing the reduced ripple operational control signals to the inverter for control of the permanent magnet motor.
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Lee Soo-yeol
Miller John P.
Rahman Khwaja M.
Schulz Steven E.
Glass Erick
GM Global Technology Operations LLC
Ingrassia Fisher & Lorenz P.C.
Ro Bentsu
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