Brushless doubly-fed generator low voltage ride through control method unde grid voltage sags

The invention discloses a low voltage ride through control method for a brushless doubly-fed generator under grid voltage drop, which comprises the following steps: The stator voltage, current and magnetic chain equations for the stator power winding and the stator control winding in the static coor...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YANG Xiaoliang, SONG Yijia, DU Haiming, ZHAO Jiane, AN Xiaoyu, HU Zhihong, SHEN Yongpeng, BAI Jiajun, WANG Yanfeng
Format:	Patent
Sprache:	eng
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:	The invention discloses a low voltage ride through control method for a brushless doubly-fed generator under grid voltage drop, which comprises the following steps: The stator voltage, current and magnetic chain equations for the stator power winding and the stator control winding in the static coordinate system are constructed to analyse and derive the change process of the stator power winding voltage and the response process of the stator power winding magnetic chain during the grid drop, based on the relationship between the voltage equation and the magnetic chain equation, and the stator power winding magnetic chain to express the equivalent voltage equation of the winding. The invention has good dynamic and static performance and robustness.