Mixed H2/H− pitch control of wind turbine generator system based on exact linearization and regional pole placement

Author

Zhu Mu ; Liu Jizhen ; Lin Zhongwei

Author_Institution

Sch. of Control & Comput. Eng., North China Electr. Power Univ., Beijing, China

fYear

2014

fDate

28-30 July 2014

Firstpage

6982

Lastpage

6986

Abstract

When the wind power electricity system working above the rated wind speed, the disturbed wind speed can lead to the output power ripple easily, which causes a significant negative influence on the stability of the power grid. In order to overcome this disadvantage, this paper discusses the mixed H₂/H_∞ pitch angle control design problem for the nonlinear wind turbine generator system (WTGS), where the turbulence is regarded as the disturbance input. Especially, the traditional exact linearization and the pole placement techniques are also applied to guarantee the desired control performance and expected dynamic characteristics in the situation of a large-scale variety of the system operation points. The simulation results show the effectiveness of the proposed method.

Keywords

H^∞ control; H² control; control system synthesis; large-scale systems; linearisation techniques; nonlinear control systems; power grids; power system stability; turbogenerators; wind turbines; H_∞ pitch angle control; H₂ pitch angle control; exact linearization; nonlinear WTGS; nonlinear wind turbine generator system; output power ripple; power grid; regional pole placement; stability; wind power electricity system; wind speed; Generators; Rotors; Torque; Wind power generation; Wind speed; Wind turbines; Wind turbine; exact linearization; mixed H2/H− control; pitch control; pole placement;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (CCC), 2014 33rd Chinese

Conference_Location

Nanjing

Type

conf

DOI

10.1109/ChiCC.2014.6896152

Filename

6896152