수직축풍력발전(VAWT)을 위한 블레이드 디자인 제안-상어 비늘 구조를 활용한 생체모방한 블레이드 디자인 중심으로

Background This study began with a simple arithmetic concept that if 60 to 80 micro-wind generators (less than 50Kw) were operated at the same time, they would produce electricity such as 1500 to 4000Kw in existing commercial use. Micro-wind power generation has the advantage of being quieter and easier to install and move in narrow areas than commercial ones, and for this purpose, horizontal axis wind power generation is relatively efficient, but the use in narrow areas is considered suitable for vertical axis wind power, so the blade design for vertical axis wind power generation is proposed. Methods Through the advantages and disadvantages of solar and drag blades in vertical axial wind power (VAWT), the goal of biomimicry blade design was defined and the solution was sought from the biomimicry suitable for it. To this end, the company wanted to evaluate the value of blade design through biomimicry by experimenting with prototype models. Results Inspired by the cross-sectional structure of shark scales (SS2: Shark Scales Blade version 2) was able to see significant improvements in comparison between the lift blade and the drag blade through a rotational speed graph. In particular, the comparison of lift blades gave a superior assessment at all measurement points. Conclusion The resultant value of the final design was rated superior to the lift blade, but compared to the drag blade, wind generated and inferior to the drag blade by 40 seconds. Therefore, further research should be conducted on how to increase wind speed up to 40 seconds after this wind power is generated.