Simultaneous STATCOM and Pitch Angle Control for Improved LVRT Capability of Fixed-Speed Wind Turbines

Author

Hossain, M. Jahangir ; Pota, Hemanshu R. ; Ugrinovskii, Valeri A. ; Ramos, Rodrigo A.

Author_Institution

Sch. of Eng. & Inf. Technol., Univ. of New South Wales at ADFA, Canberra, ACT, Australia

Volume

1

Issue

3

fYear

2010

Firstpage

142

Lastpage

151

Abstract

A robust multivariable controller with the objective of enhancing the low-voltage ride-through (LVRT) capability of wind farms with fixed-speed induction generators is presented in this paper. The nonlinear dynamics of the wind generator is represented as a linear system and a norm-bounded nonlinear uncertain term, derived from the Cauchy remainder of the Taylor series. The designed robust controller provides acceptable postfault performance for both small and large perturbations. Large disturbance simulations demonstrate that the designed controller enhances voltage stability as well as transient stability of the system during low-voltage ride-through transients and thus enhances the LVRT capability of fixed-speed wind generators.

Keywords

asynchronous generators; power system stability; static VAr compensators; wind turbines; Cauchy remainder; LVRT; STATCOM; Taylor series; fixed speed wind turbine; induction generator; linear system; low voltage ride through capability; nonlinear dynamics; pitch angle control; transient stability; voltage stability; Automatic voltage control; Induction generators; Linear systems; Nonlinear dynamical systems; Power system stability; Robust control; Taylor series; Voltage control; Wind farms; Wind turbines; Fixed-speed wind turbines; STATCOM and pitch angle controls; linearization; low-voltage ride-through (LVRT) capability; minimax linear quadratic Gaussian (LQG) control; nonlinearity; robust control; uncertainty;

fLanguage

English

Journal_Title

Sustainable Energy, IEEE Transactions on

Publisher

ieee

ISSN

1949-3029

Type

jour

DOI

10.1109/TSTE.2010.2054118

Filename

5492220