Title :
Analysis of stator voltage observers for a doubly fed induction generator
Author :
Thomsen, Sönke ; Rothenhagen, Kai ; Fuchs, Friedrich W.
Author_Institution :
Christian-Albrechts-Univ. of Kiel, Kiel
Abstract :
Observers for the stator voltage estimation of a Doubly Fed Induction Generator (DFIG) are described and investigated in this analysis. These are the Disturbance Observer (DO) and the Unknown Input Observer (UIO) with input reconstruction. They are analysed by simulations and laboratory experiments in two different reference frames. Both observers are extended to observe a bilinear system. A pseudo synchronised reference frame is proposed to improve performance. The results of the observers are compared to the results of an inverse model of the DFIG. It can be stated, that the stator voltage is well observed.
Keywords :
asynchronous generators; bilinear systems; machine control; observers; AC machine; bilinear system; disturbance observer; doubly fed induction generator; estimation technique; input reconstruction; pseudo synchronised reference frame; stator voltage estimation; stator voltage observer; unknown input observer; Electrical fault detection; Induction generators; Induction machines; Inverse problems; Laboratories; Nonlinear systems; Power generation; Stators; Voltage measurement; Wind energy generation; AC machine; Doubly fed induction motor; Estimation technique; Modelling;
Conference_Titel :
Power Electronics and Applications, 2007 European Conference on
Conference_Location :
Aalborg
Print_ISBN :
978-92-75815-10-8
Electronic_ISBN :
978-92-75815-10-8
DOI :
10.1109/EPE.2007.4417352
