Title :
Power coordinated control of wind turbines with permanent magnet synchronous generator for low voltage ride through
Author :
Zhongyi Liu ; Chongru Liu ; Gengyin Li
Author_Institution :
State Key Lab. of Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Beijing, China
Abstract :
A power coordinated control method is proposed in this paper. It is used to improve the low voltage ride through (LVRT) capability of wind turbines with permanent magnet synchronous generator (PMSG). Firstly, the factors that influence the LVRT of PMSG are analyzed in details. A coordinated application strategy of these factors is presented. Secondly, an improved power coordinated control method is proposed based on the theory analysis. The active power on the grid side is controlled to track the maximum wind energy. The active power output of the generator maintains the DC link voltage constant. Current limitation links are added to the converters. And the mode of pitch angle control is also modified. The LVRT burden of PMSG can be reduced by the pitch system in the whole wind speed range. Thirdly, the practicability and effectiveness of the proposed method is verified by the simulation in DIgSILENT/Power Factory.
Keywords :
machine control; permanent magnet generators; power control; power generation control; synchronous generators; wind power plants; wind turbines; DC link voltage; low voltage ride through; permanent magnet synchronous generator; pitch angle control; pitch system; power coordinated control method; wind turbines; Generators; Low voltage; Reactive power; Rotors; Transient analysis; Wind speed; Wind turbines; Converter current limitation control; low voltage ride through; permanent magnet synchronous generator; pitch angle; power coordinated control;
Conference_Titel :
PES General Meeting | Conference & Exposition, 2014 IEEE
Conference_Location :
National Harbor, MD
DOI :
10.1109/PESGM.2014.6939204
