DocumentCode :
3426607
Title :
Real-time sliding mode control for a doubly fed induction generator
Author :
Ruiz, R. ; Sanchez, E.N. ; Loukianov, A.G.
Author_Institution :
CINVESTAV-IPN, Jalisco, Mexico
fYear :
2011
fDate :
12-15 Dec. 2011
Firstpage :
2975
Lastpage :
2980
Abstract :
This paper proposes a control scheme based on the block control technique using sliding modes, for a doubly fed induction generator (DFIG) prototype connected to an infinity bus. The DFIG is widely used as a wind generator; it allows the rotor speed to vary while synchronizing the stator directly to a fixed frequency power system. The generation scheme for the DFIG has one back-to-back PWM voltage-source converter connected between the rotor and the electrical grid. The rotor side converter (RSC) is connected via a dc link to the grid side converter (GSC), which is in turn connected to the stator terminals directly or through a step-up transformer. A block control scheme for the RSC is proposed to control the electric torque and the reactive power independently. The variables to be controlled by the GSC are the dc voltage in the dc link and the reactive power in the step-up terminals. The performance of the control scheme proposed is illustrated via real-time implementation in a 1/4HP DFIG prototype.
Keywords :
PWM power convertors; asynchronous generators; power generation control; power grids; reactive power control; rotors; stators; torque control; variable structure systems; wind power plants; DFIG; GSC; RSC; back-to-back PWM converter; block control technique; doubly fed induction generator; electric torque control; electrical grid; frequency power system; grid side converter; reactive power control; real-time sliding mode control; rotor side converter; stator; voltage source converter; wind generator; Reactive power; Rotors; Stator windings; Torque; Voltage control; Wind turbines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on
Conference_Location :
Orlando, FL
ISSN :
0743-1546
Print_ISBN :
978-1-61284-800-6
Electronic_ISBN :
0743-1546
Type :
conf
DOI :
10.1109/CDC.2011.6160470
Filename :
6160470
Link To Document :
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