Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems
Patent
1995-05-30
1997-05-06
Cabeca, John W.
Electricity: motive power systems
Synchronous motor systems
Hysteresis or reluctance motor systems
318254, H02P 146
Patent
active
056274440
ABSTRACT:
Rotor position information for a switched reluctance motor rotor is obtained during energization of a stator winding of the motor with a fixed voltage pulsed signal. The inductance of the rotor is sensed and monitored to determine a minimum inductance of the stator winding. A microprocessor controller uses the minimum inductance to dynamically update a threshold value that the sensed inductance is compared to when determining whether to de-energize the stator winding that is energized and to energize the next stator winding. By dynamically updating the threshold value, the controller compensates for manufacturing tolerances in the stator windings and dynamic inductance changes of the stator windings due to aging and changes in the operating temperature thereof.
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Cabeca John W.
General Motors Corporation
Simon Anthony Luke
LandOfFree
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