Title :
LMI based robust PSS for grid-connected DFIG wind turbines
Author :
Yuan Peng ; Quanmin Zhu ; Nouri, H.
Author_Institution :
Dept. of Eng. Design & Math., Univ. of the West of England, Bristol, UK
fDate :
Aug. 31 2013-Sept. 2 2013
Abstract :
This paper presents a novel modelling method for grid-connected DFIG wind turbine and related robust PSS performance study. Linear Matrices Inequality (LMI) based H2/H∞ output feedback controller design approach is applied for power system stabilizers (PSSs) design. Unlike conventional PSS, the robust PSS has better performance and damping ability to different types of generators. Oscillations caused by different kinds of wind speed disturbances are analysed by comparisons between the performances of the DFIG wind turbine installed with and without PSS. The simulations and experiments are evaluated on a benchmark single machine infinite bus (SMIB) grid-connected DFIG wind turbine. The performance of robust PSS is not as effective as it is for synchronous generators because of the strong self-damping ability of grid-connected DFIG wind turbines.
Keywords :
H∞ control; H2 control; control system synthesis; damping; feedback; linear matrix inequalities; machine control; power grids; power system stability; robust control; wind turbines; LMI based robust PSS; LMI-based H2-H∞ output feedback controller design approach; Linear Matrices Inequality; SMIB grid-connected DFIG wind turbine; benchmark single machine infinite bus grid-connected DFIG wind turbine; grid-connected DFIG wind turbine modelling method; oscillation analysis; power system stabilizer design; self-damping ability; wind speed disturbances; Electronic mail; Impedance; Indexes; Insulated gate bipolar transistors; Robustness; Synchronous generators; Wind turbines; Grid-connected DFIG; H2/H∞ robust PSS; LMI;
Conference_Titel :
Modelling, Identification & Control (ICMIC), 2013 Proceedings of International Conference on
Conference_Location :
Cairo
Print_ISBN :
978-0-9567157-3-9
