Method and System for Providing Increased Turbine Output for Doubly Fed Induction Generator

A system and method for supplying increased frequency supporting current from a doubly fed induction generator (DFIG) (120) to assist in maintaining grid stability is provided. The output capability of a line side converter (168) associated with the DFIG (120) is enhanced by significantly increasing...

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Bibliographische Detailangaben
Hauptverfasser:	Ritter, Allen Michael, Melius, Jeffrey Alan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER 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 SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	A system and method for supplying increased frequency supporting current from a doubly fed induction generator (DFIG) (120) to assist in maintaining grid stability is provided. The output capability of a line side converter (168) associated with the DFIG (120) is enhanced by significantly increasing the current handling capacity of electric switches forming the converter. A dynamic brake (200) is also provided across a DC link (136) coupling the line side converter (166) to a rotor side converter (168) coupled to the rotor of the DFIG (120). The dynamic brake (200) is controlled based on the voltage across the DC link (136).