Title :
Unified control for grid-side converter of multibrid wind power generation system
Author :
Guangchen, Liu ; Shengtie, Wang ; Jun, Guo
Author_Institution :
Fac. of Electr. Power, Inner Mongolia Univ. of Technol., Hohhot, China
Abstract :
Multibrid wind power generation system (MWPGS) has aroused more and more attention for its high energy conversion efficiency, high reliability, and flexible grid-connected power control. In order to achieve the decoupling regulation of the active and reactive power during the normal operation and enhance its capability of low voltage ride-though (LVRT) during grid voltage sag, a unified control strategy for MWPGS´s grid-side converter is developed, which incorporates the improved grid-side voltage orientation control (VOC) with fuzzy auto-tuning PI controller and the control of braking resistor based on power balance method. Simulation of control performance for MWPGS´s grid-side converter is carried out in Matlab/Simulink, and the results verify the correctness and feasibility of the unified control strategy proposed in this paper.
Keywords :
PI control; energy conservation; fuzzy control; power convertors; power grids; power supply quality; reactive power control; voltage control; wind power plants; PI controller; active power regulation; decoupling regulation; energy conversion efficiency; fuzzy autotuning; grid voltage sag; grid-side converter; low voltage ride-though; multibrid wind power generation system; power balance method; power control; reactive power regulation; unified control; voltage orientation control; Converters; Niobium; Pulse width modulation; Braking resistor; Fuzzy control; Low voltage ride-through; Multibrid wind power generation system; Permanent synchronous magnet generators; Power balance; Pulse width modulation; Simulation; Voltage orientation control; Voltage sag;
Conference_Titel :
Power System Technology (POWERCON), 2010 International Conference on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-5938-4
DOI :
10.1109/POWERCON.2010.5666396
