DocumentCode :
876263
Title :
Direct Power Control Applied to Doubly Fed Induction Generator Under Unbalanced Grid Voltage Conditions
Author :
Santos-Martin, David ; Rodriguez-Amenedo, Jose Luis ; Arnalte, Santiago
Author_Institution :
Dept. of Electr. Eng., Univ. Carlos III, Leganes
Volume :
23
Issue :
5
fYear :
2008
Firstpage :
2328
Lastpage :
2336
Abstract :
This paper analyzes the effects of unbalanced voltage on doubly fed induction generators. It also presents a novel control strategy based on direct power control (DPC+) applied to this type of generators, predominant in wind energy applications, that enables them to work under perturbed conditions and achieve optimum results. Although the technique can be implemented to control both rotor converters and grid converters, we will hereby exemplify the former which regulates stator active and reactive power. The results obtained with DPC+ are then compared through experimental tests to indicate that the technique is suitable and achieves good dynamic responses while controlling current distortion, power or torque oscillations. The validation of results has been performed through experimental tests on a 20-kW generator.
Keywords :
asynchronous generators; electric current control; machine control; power control; power convertors; power grids; torque control; current distortion control; direct power control; doubly fed induction generator; grid converters control; power 20 kW; reactive power; rotor converters control; stator power; torque oscillations control; unbalanced grid voltage conditions; wind energy applications; Direct power control (DPC+); doubly fed induction generator (DFIG); unbalanced voltage; voltage dip;
fLanguage :
English
Journal_Title :
Power Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8993
Type :
jour
DOI :
10.1109/TPEL.2008.2001907
Filename :
4636745
Link To Document :
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