Optimum pitch control for variable-pitch vertical-axis wind turbines by a single stage model on the momentum theory

Author

Kosaku, Toshiharu ; Sano, Manabu ; Nakatani, Kazunori

Author_Institution

Dept. of Comput. Sci., Hiroshima City Univ., Japan

Volume

5

fYear

2002

fDate

6-9 Oct. 2002

Abstract

We propose a new approach to realize the optimum control of the pitch angles of the blades on a variable-pitch straight-blade type of vertical-axis wind turbine. After deriving the power coefficient and the tip speed ratio of the turbine by merging the single-stage momentum theory and the blade element analysis, we can solve the stationary problems by using the Calculus of Variations and obtain the optimum pitch-angle control law on a tip speed ratio and calculate the power coefficient.

Keywords

aerodynamics; calculus; computational fluid dynamics; mechanical variables control; optimal control; spatial variables control; wind turbines; Calculus of Variations; blade element analysis; fluid dynamics; momentum theory; optimum pitch control; optimum pitch-angle control law; pitch angles; power coefficient; single stage model; single-stage momentum theory; tip speed ratio; variable-pitch vertical-axis wind turbines; Aerodynamics; Azimuth; Blades; Calculus; Computer science; Nuclear fuels; Torque; Wind energy; Wind speed; Wind turbines;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man and Cybernetics, 2002 IEEE International Conference on

ISSN

1062-922X

Print_ISBN

0-7803-7437-1

Type

conf

DOI

10.1109/ICSMC.2002.1176406

Filename

1176406