Title :
Study on dynamic LVRT behavior of DFIG considering the influence of the grid
Author :
Zenghui Li ; Ran Li ; Feifei Wang ; Yihe Wang
Author_Institution :
State Key Lab. of Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Baoding, China
fDate :
Oct. 30 2012-Nov. 2 2012
Abstract :
Considering the effect of the grid, this paper makes a thorough study on dynamic low voltage riding through(LVRT) behavior of doubly fed induction generator(DFIG) focusing on the rotor current dynamics at fault clearance. A conclusion is drawn that there are not current inrushes aroused again in rotor at fault clearance duo to the abrupt transitions from one steady state to another of DFIG stator fluxes at this very moment. The theoretical analyses are verified through simulations of DFIG connecting to the grid under six operating situations in MATLAB/Simulink environment. The analyses on rotor current dynamics of DFIG at low voltage riding through are of significance for the improvement of crowbar switching strategies to enhance a DFIG´s LVRT abilities.
Keywords :
asynchronous generators; rotors; DFIG stator fluxes; MATLAB/Simulink environment; crowbar switching strategies; doubly fed induction generator; dynamic LVRT behavior; fault clearance; low voltage riding through; rotor current dynamics; theoretical analyses; Laboratories; MATLAB; Radio access networks; Rotors; Stators; Vectors; Doubly fed induction generator; dynamics; low voltage ride through; wind generation;
Conference_Titel :
Power System Technology (POWERCON), 2012 IEEE International Conference on
Conference_Location :
Auckland
Print_ISBN :
978-1-4673-2868-5
DOI :
10.1109/PowerCon.2012.6401295
