Experimental study on structures of counter-rotating wind turbines

Author

Zhiqiang Li ; Yong Wang ; Haitao Xiao

Author_Institution

Sch. of Jet Propulsion, Beijing Univ. of Aeronaut. & Astronaut., Beijing, China

Volume

1

fYear

2014

fDate

19-21 Aug. 2014

Firstpage

368

Lastpage

372

Abstract

Based on the principle of counter-rotating wind turbine (CRWT), several experiments are done to study the wind energy extraction of the small horizontal axis CRWT with different pitch angles and space lengths between two rotors. The results show that the counter-rotating wind turbine can extract more wind energy, when the pitch angles of two rotors are both 50°. For the counter-rotating wind turbine employed in this experiment, the power output under different wind speed is higher when space length between two rotors keeps in the range of 8-12cm. Also, a counter-rotating rotor system could increase power conversion efficiency by 40% than single rotor system.

Keywords

rotors (mechanical); structural engineering; wind power; wind turbines; counter-rotating rotor system; counter-rotating wind turbine; pitch angles; power conversion efficiency; power output; single rotor system; small horizontal axis CRWT; space lengths; structures; wind energy extraction; wind speed; Aerodynamics; Power conversion; Rotors; Testing; Wind energy; Wind speed; Wind turbines; counter-rotating wind turbine; power output; wind energy;

fLanguage

English

Publisher

ieee

Conference_Titel

Materials for Renewable Energy and Environment (ICMREE), 2013 International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4799-3335-8

Type

conf

DOI

10.1109/ICMREE.2013.6893685

Filename

6893685