Electricity: motive power systems – Battery-fed motor systems
Reexamination Certificate
2011-08-16
2011-08-16
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Battery-fed motor systems
C318S400370, C318S661000
Reexamination Certificate
active
07999496
ABSTRACT:
A control system and method to determine position of a rotor relative to a stator for a synchronous multipole electrical machine is presented, including one for application on a fuel/electric hybrid powertrain for a vehicle. The machine includes a stator, a rotor, and a rotor position sensing mechanism. The control system controls the electrical machine, in conjunction with an electrical storage device and an inverter, using algorithms and calibrations which derive a rotor position based upon a sensorless position sensing technique, and determine an offset from a sensed rotor position. Electrical output from the inverter to the machine is controlled based the offset, which is stored non-volatile memory. A rotor position is derived based upon a sensorless position sensing technique during initial machine operation after startup of the machine, and includes operation in a torque-generative mode and in an electrical energy-generative mode.
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Gleason Sean E
Prihoda Patrick M.
Schulz Steven E.
GM Global Technology Operations LLC
Ro Bentsu
LandOfFree
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