DETERMINING A PERMANENT MAGNET FLUX STATE

Examples include a method for determining a permanent magnet flux state of a rotor in a synchronous motor using a VSD. The method comprises obtaining d-axis and q-axis inductance values of the motor, fixing a non-zero stator current magnitude and controlling a motor speed using a speed loop regulati...

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Bibliographische Detailangaben
Hauptverfasser:	KOTEICH, Mohamad, GHASSANI, RASHAD
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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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Beschreibung
Zusammenfassung:	Examples include a method for determining a permanent magnet flux state of a rotor in a synchronous motor using a VSD. The method comprises obtaining d-axis and q-axis inductance values of the motor, fixing a non-zero stator current magnitude and controlling a motor speed using a speed loop regulation in a stator current angle γ polar coordinate frame to reach a zero motor speed steady state corresponding to the fixed non-zero stator current magnitude, to the obtained d-axis and q-axis inductance values, and to a no-load situation. The method further comprises recording coordinates of the reached steady state.