REVIEW ARTICLE


Determination Method of Critical Best Tip Speed Ratio for the Vertical Axis Wind Turbine



Zhang Lijun*, 1, Liu Hua2, Zhang Mingming2, Hu Yi’e2
1 College of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, Shandong, 266580, P.R. China
2 Qingdao Donghua Shi Intelligent Equipment Co., Ltd, Qingdao, Shandong, 266580, P.R. China


© 2015 Lijun et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the College of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao, Shandong, 266580, P.R. China; Tel: 053286983500; E-mail: zlj1977628@sohu.com


Abstract

Tip speed ratio is an important parameter of describing wind turbine performance. Based on vane airfoil profile, the relationship between vane lift coefficient, drag coefficient and angle of attack is calculated by means of Profili software. The corresponding stall angle is also obtained. The relationship between the position angle of vane and angle of attack at different tip speed ratios is drawn by Matlab software and the corresponding best tip speed ratio is determined rapidly. Based on it, the airfoil tangential force is also analyzed for different vane airfoil profiles in the condition of same Reynolds number.

Keywords: Vertical axis wind turbine (VAWT), Tip speed ratio, Airfoil profile, Profili, Stall angle.