Title :
DFIG based standalone power system operating at low load conditions.
Author :
Iwanski, Grzegorz
Author_Institution :
Warsaw Univ. of Technol., Warsaw, Poland
Abstract :
The comparison of inductive and capacitive filter for standalone variable speed operated doubly fed induction generator DFIG is presented in the paper. Simulation and experimental results of both methods of filtration are shown. The model equations with stator connected filtering capacitors are analyzed. Sensorless control of the stator voltage vector in the polar frame is described. PLL based frequency control of generated stator voltage is presented. Modification of the control system allow for faster synchronization of the actual and reference voltage vector, what provide shorter start-up procedure of the system and better stabilization especially at low load conditions. Simulation and experimental results of improved frequency control of the standalone doubly fed induction generator are presented.
Keywords :
asynchronous generators; frequency control; machine vector control; synchronisation; DFIG; PLL; capacitive filter; control system; doubly fed induction generator; filtering capacitors; frequency control; inductive filter; sensorless control; standalone power system; stator; stator voltage vector control; synchronization; Filters; Filtration; Frequency control; Induction generators; Power system analysis computing; Power system modeling; Power system simulation; Power systems; Sensorless control; Stators; power generation; renewable energy; standalone power system; variable speed generation;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
