Title :
Ride-Through Control of a Doubly Fed Induction Generator Under Unbalanced Voltage Sags
Author :
Gomis-Bellmunt, Oriol ; Junyent-Ferre, Adria ; Sumper, Andreas ; Bergas-Jan, J.
Author_Institution :
Dept. d´´Eng. Electr., Univ. Politec. de Catalunya, Barcelona
Abstract :
This paper deals with the control of doubly fed induction generators to ride through unbalanced voltage sags. A control strategy is proposed by choosing certain current reference values in the positive and negative sequences so that the torque and the DC voltage are kept stable during such unbalanced sags. Both rotor- and grid-side converters are considered, detailing the control scheme of each converter while considering the effect of the crowbar protection. The control strategy is validated by means of simulations.
Keywords :
asynchronous generators; machine vector control; power convertors; power generation control; power grids; power supply quality; wind power plants; crowbar protection; doubly fed induction generator; grid-side converters; ride-through control; rotor-side converters; unbalanced voltage sags; wind power generation; Angular velocity; Inductance; Induction generators; Power quality; Power system reliability; Power system stability; Rotors; Stators; Torque control; Voltage control; Doubly fed induction generator (DFIG); unbalanced voltage sags; wind power generation;
Journal_Title :
Energy Conversion, IEEE Transactions on
DOI :
10.1109/TEC.2008.2001440
