Title :
Rotor current PI controllers in the method of output voltage control of variable speed standalone DFIG
Author :
Iwanski, Grzegorz ; Koczara, Wlodzimierz
Author_Institution :
Inst. of Control & Ind. Electron., Warsaw Univ. of Technol., Warsaw
fDate :
June 30 2008-July 2 2008
Abstract :
Doubly fed induction generator DFIG operating in standalone mode is described. Analysis of single phase model allow for the selection of the filtering capacitance connected to the stator. The standalone DFIG is compared to the classical synchronous generator with DC excitation current. Method of output voltage control using PI controllers of the rotor current is shown. Decoupling between the amplitude and frequency of the stator voltage allow for the simple prototyping and step response based tuning of the PI controllers. Rotor current PI controllers are used in the rotating frame connected with a rotor current vector. They are designed using simplified model of the rotor excited slip ring induction machine. Results of simulation with 250 kW slip ring induction generator are shown. Laboratory results of 2.2 kW DFIG supplying the different type of load is presented.
Keywords :
PI control; asynchronous generators; capacitance; electric current control; machine control; rotors; DC excitation current; capacitance filtering; doubly fed induction generator DFIG; output voltage control; rotating frame; rotor current PI controller; rotor current vector; rotor excited slip ring induction machine; simple prototyping; single phase model; stator voltage; step response; synchronous generator; variable speed standalone DFIG; Capacitance; Filtering; Frequency; Induction generators; Prototypes; Rotors; Stators; Synchronous generators; Tuning; Voltage control;
Conference_Titel :
Industrial Electronics, 2008. ISIE 2008. IEEE International Symposium on
Conference_Location :
Cambridge
Print_ISBN :
978-1-4244-1665-3
Electronic_ISBN :
978-1-4244-1666-0
DOI :
10.1109/ISIE.2008.4677278
