Title :
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
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;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6647220
