Title :
Mode changing stability of wind turbine in an integrated wind turbine and rechargeable battery system
Author :
Mecklenborg, C.A. ; Palejiya, D. ; Hall, J.F. ; Dongmei Chen
fDate :
June 29 2011-July 1 2011
Abstract :
Power generated by wind turbines changes due to variation in wind speed that is independent of the load power. Rechargeable batteries could be used as a reserve power source to alleviate unbalance between the load power and power generated by wind turbines. A supervisory controller is proposed for an integrated wind turbine-battery system (wind turbine electrically connected to a rechargeable battery). The switching conditions for wind turbine controller operating in multi-input and single-input control modes are discussed. Stability of the wind turbine controller switching between the two modes is analyzed using linearized, open-loop approximation of wind turbine dynamics at the switching instants. A Common Quadratic Lyapunov Function (CQLF) is established for both control modes to prove the system stability. Simulation results demonstrating system stability are also discussed.
Keywords :
Lyapunov methods; open loop systems; power generation control; power system stability; secondary cells; wind turbines; CQLF; common quadratic Lyapunov function; integrated wind turbine-rechargeable battery system; linearized approximation; mode changing stability; multi-input single-input control; open-loop approximation; reserve power source; supervisory controller; system stability; wind speed; wind turbine controller switching stability; Batteries; Stability analysis; Switches; Wind power generation; Wind speed; Wind turbines;
Conference_Titel :
American Control Conference (ACC), 2011
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4577-0080-4
DOI :
10.1109/ACC.2011.5991267
