Title :
Sensorless Control of the Doubly-Fed Induction Generator for Wind Energy Generations Using a Speed-Adaptive Full-Order Flux Observer
Author :
Yang, Sheng ; Ajjarapu, Venkataramana
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA
Abstract :
In this paper, a speed-adaptive full-order flux observer for sensorless vector control of doubly-fed induction generators (DFIGs) is proposed. The observer is a simulation of the full-order electrical model of DFIGs with feedback of the rotor current estimation error and a speed adaptation loop. The observer gains are selected based on a stability analysis and validated by the linearized closed-loop observer model. Simulation results demonstrate desired steady-state and dynamic performance of this sensorless control approach for DFIG-based variable speed wind turbines.
Keywords :
asynchronous generators; closed loop systems; linearisation techniques; machine vector control; observers; rotors; stability; velocity control; wind power plants; wind turbines; doubly-fed induction generator; full-order electrical model; linearized closed-loop observer model; rotor current estimation error; sensorless vector control; speed adaptation loop; speed-adaptive full-order flux observer; stability analysis; variable speed wind turbines; wind energy generations; Feedback loop; Induction generators; Machine vector control; Observers; Rotors; Sensorless control; Stability analysis; Stators; Wind energy generation; Wind turbines;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2009.4802940
