Electricity: motive power systems – Limitation of motor load – current – torque or force
Reexamination Certificate
2007-05-15
2007-05-15
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Limitation of motor load, current, torque or force
C318S432000
Reexamination Certificate
active
11375429
ABSTRACT:
Methods and apparatus are provided for controlling AC motor torque output. The method comprises the steps of producing a current based on a first comparison of a fundamental output frequency of the AC motor with a predetermined frequency and a second comparison of a magnitude of a commanded current with a predetermined DC current, and supplying the current to the AC motor.
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Hiti Silva
Schulz Steven E.
Welchko Brian
DeVries Christopher
GM Global Technology Operations Inc.
Ro Bentsu
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