Title :
Novel rotor-side control scheme for Doubly Fed Induction Generator to ride through grid faults
Author :
Zhang, Zhendong ; Xu, Longya ; Zhang, Yuan ; Guan, Bo
Author_Institution :
Dept. of Electr. & Comput. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
A simplified transient model of the Doubly Fed Induction Generator (DFIG) is used to investigate the effects when the voltage sags impose to the DFIG generation system. It is identified that the symmetrical transient voltage sag creates a DC component in the magnetic field which causes over currents in both the stator and rotor windings. The characteristics of the DC flux component are investigated and new control strategy is presented. Computer simulation is used to verify the expanded ride-through capability of the novel strategy.
Keywords :
asynchronous generators; power grids; power supply quality; rotors; stators; transients; DC flux component; DFIG generation system; doubly fed induction generator; grid faults; magnetic field; ride-through capability; rotor side control scheme; rotor windings; stator windings; symmetrical transient voltage sag; Circuit faults; Rotors; Stator windings; Transient analysis; Voltage control; Voltage fluctuations; Doubly Fed Induction Generator (DFIG); Low Voltage Ride Through (LVRT); stator DC flux;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
DOI :
10.1109/ECCE.2010.5618399
