Large Disturbance Stability Analysis of Wind Turbine implemented with DFIG

Title	Large Disturbance Stability Analysis of Wind Turbine implemented with DFIG
Publication Type	Conference Paper
Year of Publication	2009
Authors	Najafi, H R, Robinson F, Samadi A A, Dastyar F
Conference Name	Proceedings of the 44th International Universities Power Engineering Conference
Date Published	September
Conference Location	University of Strathclyde
Keywords	Distributed Generation Generator dynamics and control 1
Abstract	Doubly-Fed induction generator introduces itself as a very attractive option for wind-farm installations with a fast growing market demand. An important phenomenon related to the DFIG operation that deserves special attention is its dynamic behavior during faults. Due to the abrupt reduction in the electrical torque during short circuits, DFIG may accelerate to high speeds. The large-disturbance stability phenomena of DFIG can be verified by analyzing the dynamic response of the rotor speed or the terminal voltage during fault's period. This paper presents an analytical method for analysis of large-disturbance stability of DFIG. The proposed analysis is based on the concepts of stable and unstable electrical-mechanical equilibrium points, the electrical-mechanical torque versus rotor speed and Critical fault clearance time of DFIG. The results of analysis specify the effective parameters on the large-disturbance stability of DFIG.