LOCK DETECTOR FOR SWITCHED RELUCTANCE MACHINE ROTOR POSITION ESTIMATOR

RD-20,393 LOCK DETECTOR FOR SWITCHED RELUCTANCE MACHINE ROTOR POSITION ESTIMATOR A lock detector for a switched reluctance motor (SRM) position estimator monitors the rotor angle estimates from a SRM rotor position estimator to make sure that the estimator is accurately tracking rotor position. Phas...

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Bibliographic Details
Main Authors MACMINN, STEPHEN R, LYONS, JAMES P
Format Patent
LanguageEnglish
French
Published 14.03.1993
Edition5
Subjects
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS
CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
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Summary:RD-20,393 LOCK DETECTOR FOR SWITCHED RELUCTANCE MACHINE ROTOR POSITION ESTIMATOR A lock detector for a switched reluctance motor (SRM) position estimator monitors the rotor angle estimates from a SRM rotor position estimator to make sure that the estimator is accurately tracking rotor position. Phase flux and current measurements corresponding to the rotor angle estimate of the sampled phase are supplied to dividing circuitry which generates a phase inductance estimate. The phase inductance estimate is compared by logic circuitry to lower and upper inductance limits to determine whether the rotor angle estimate falls within a specified tolerance of a theoretical inductance value. Alternatively, a flux-current map is used to generate a phase flux reference for comparison to the phase flux estimate. A lock detector flip-flop is reset whenever the phase inductance estimate (or phase flux estimate) is outside the specified tolerance, and a signal is sent thereby to disable the SRM.
Bibliography:Application Number: CA19922076108