DUAL CURRENT CONTROLLER FOR DOUBLY-FED INDUCTION GENERATOR

PURPOSE: A current controller for a doubly-fed induction generator is provided to stably control a DC link voltage in the unbalance voltage condition by controlling a positive-phase-sequence component and a negative-phase-sequence component of a rotor current. CONSTITUTION: A rotor current is classi...

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Bibliographische Detailangaben
Hauptverfasser:	OH, CHANG HUN, PAE, DEUK WOO, PARK, JUNG WOO
Format:	Patent
Sprache:	eng ; kor
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:	PURPOSE: A current controller for a doubly-fed induction generator is provided to stably control a DC link voltage in the unbalance voltage condition by controlling a positive-phase-sequence component and a negative-phase-sequence component of a rotor current. CONSTITUTION: A rotor current is classified into a d-axis current and a q-axis current. The d-axis current is classified into a d-axis ordinary component and d-axis negative-phase component. The q-axis current is classified into a q-axis ordinary component and a q-axis negative component. The d-axis ordinary component of the rotor voltage is calculated by using the d-axis normal reference value of the rotor current and the error of the d-axis ordinary component. The d-axis negative-phase component of the rotor voltage is calculated by using the d-axis reverse phase reference value of the rotor current and the error of the d-axis negative-phase component.