The Comparison of Theoretical Potential Application of Two Types of Wind Turbines in Northern Shaanxi

Abstract

In order to take advantage of wind resource which is not rich in Shaanxi northern region and the annual average wind velocity is a little more than 4m/s, this paper focused on researching the comparison of theoretical potential application of vertical axis wind turbines (VAWT) and horizontal axis wind turbines (HAWT) in Northern Shaanxi. Wind velocity distributions were calculated by the Rayleigh distribution method based on local meteorological data in Yulin and Yan'an where the most common wind velocity is 3 or 4m/s. Then this paper based on the working characteristics of 600W permanent magnet generator, simulated the working performances of VAWT and compared with traditional HAWT. The results showed that more than 70 percent wind resource concentrated at wind speed ranged is from 3m/s to 8m/s, working hours of VAWT were more than 2000 hours in a year, and electricity generated of VAWT was over 50 percent more than traditional HAWT. Thus, although the aerodynamic performances of the vertical axis wind turbine are less efficient, we can conclude that VAWT have higher torque, less starting wind speed which will be more effective to match wind resource distribution of North Shaanxi and have more potential applications than HAWT. Vertical axis wind turbine; horizontal axis wind turbine; wind power; windI.

Neural Networks for Improving Wind Power Efficiency: A Review

“…The axis of rotation of the HAWT is horizontal to the wind. The advantage of a HAWT is that it has a higher power generation efficiency than a VAWT [58,59]. However, HAWTs must change the nacelle direction to maintain maximum power generation.…”

“…Consequently, VAWTs bear simpler structures, and their maintenance is easier than HAWTs. In addition, a VAWT wind farm can be constructed more densely than a wind farm composed of HAWTs [59,61,62]. Despite the advantages of a VAWT, it is rarely used because of its lower power generation efficiency than HAWT.…”

“…Despite the advantages of a VAWT, it is rarely used because of its lower power generation efficiency than HAWT. [58,59]. Therefore, only HAWT is considered in the current study.…”

Design and construction of a prototype vertical axis wind turbine (VAWT) for battery charging application

“…Ishimatsu et al [7] has done a critical study and a 2D simulation of darrius turbine was carried out. The major advantages and disadvantages of HAWT and VAWT has been explicitly described and is available in the literature [8]. A recent and novel idea of magnetically levitated Vertical Axis Wind Turbine [9] draws attention of many researchers working in this area.…”

A preliminary energy and environmental assessment of a micro wind turbine prototype in natural protected areas

“…In order to realized a wind prototype suitable for site with low wind speed, as well as in sites with high turbulence like urban areas, a VAWT (vertical axis wind turbine) was chosen. In fact, many authors reported that the VAWTs offer better solutions for harnessing wind energy [24][25][26][27][28]. Specifically, a H-Darrieus rotor was adopted.…”