Title :
A novel DC grid connected DFIG system with active power filter based on predictive current control
Author :
Yu, Nisa ; Nian, Heng ; Quan, Yu
Author_Institution :
Coll. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
The paper presents a novel DC grid connection technique for wind power generation system based on the double fed induction generator (DFIG), in which a diode bridge rectifier is directly connected to the stator side of DFIG to connect DC grid. The direct voltage control is applied for the DFIG system to achieve the sinusoidal stator voltage. In order to eliminate the harmonic currents produced by the diode rectifier, an active power filter is built between DFIG stator and the diode bridge, in which the predictive current control is applied to remove the control delay caused by computation and sampling. The availability of the proposed system and control strategy is validated by the simulation results on a 1.5-MW DFIG-based DC grid connection system.
Keywords :
active filters; asynchronous generators; delays; diodes; electric current control; machine control; power grids; power harmonic filters; predictive control; rectifiers; stators; voltage control; wind power plants; DFIG stator; DFIG-based DC grid connection system; active power filter; diode bridge rectifier; double fed induction generator; harmonic current; power 1.5 MW; predictive current control delay; sinusoidal stator voltage control strategy; wind power generation; Active filters; Harmonic analysis; Rotors; Space vector pulse width modulation; Stators; Vectors; Voltage control; active power filter; direct voltage control; doubly-fed induction generator; predictive current control; wind power;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073419
