Optimal control for an HVDC system with series connected offshore wind turbines

Author

Garces, Alejandro ; Barrera-Cardenas, Rene ; Molinas, Marta

Author_Institution

Dept. of Electr. Power Eng., Univ. Tecnol. de Pereira, Pereira, Colombia

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

3918

Lastpage

3925

Abstract

This paper studies an HVDC system based on pulse-width-modulated current source converters (PWM-CSC) which is suitable for series connection of offshore wind turbines. A high-frequency link based on reduced matrix converter is proposed as energy conversion system in each wind turbine. An optimal linear quadratic regulator is designed in order to reduce the complexity of the inner-loop and to improve its dynamic performance. Operation features of this control are tested in stationary state and transient conditions.

Keywords

HVDC power convertors; PWM power convertors; constant current sources; control system synthesis; direct energy conversion; linear systems; matrix convertors; offshore installations; optimal control; power generation control; wind turbines; HVDC system; PWM-CSC; energy conversion system; high-frequency link; inner-loop complexity reduction; matrix converter; optimal control; optimal linear quadratic regulator; pulse-width-modulated current source converter; series connected offshore wind turbine; HVDC transmission; Matrix converters; Optimal control; Pi control; Torque; Wind speed; Wind turbines; LQR; Offshore wind energy; matrix converter; optimal control;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6647220

Filename

6647220