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시뮬레이션을 통한 수직축 풍력발전에 관한 연구

A Study of Vertical Axis Wind Turbine by Simulation

  • 투고 : 2018.03.08
  • 심사 : 2018.06.18
  • 발행 : 2018.06.30

초록

본 논문에서 주 블레이드를 V 형태로 설계하고 주 블레이드 각도와 풍속을 변화시켜 최상의 설계조건을 확인하고자 하였다. 주 블레이드 open angle을 $120^{\circ}$유지하고, 각도를 $30^{\circ}$로 변화시킨 sample2와 $60^{\circ}$로 변화시킨 sample3를 비교 하였을 때, sample2는 출력이 3.8[kW], 효율은 0.12로 측정되었고 sample3은 출력이 6.0[kW] 효율은 0.18로 측정되었다. 즉 sample3은 sample2보다 출력이 58%, 효율이 50% 상승되었다. 그리고 주 블레이드 open angle $120^{\circ}$, 각도를 $60^{\circ}$로 고정하여 풍속을 7[m/s]일 때 출력이 6.0[kW]으로 효율은 0.18로 측정되었고, 풍속을 10[m/s]로 변화 주었을 때 출력은 7.7[kW], 효율은 0.23으로 측정되었다. 즉 풍속이 높았을 때 출력은 28%, 효율은 83%가 상승되었다. 또한 sample4는 sample2보다 출력에서 103%, 효율에서 92%가 더 상승하였다.

This paper designed the main blade in V-shape and tried to identify the best design conditions by changing the main blade angle and wind speed. When the main blade open angle was maintained at $120^{\circ}$ and the sample2 with an angle changed by $30^{\circ}$ was compared with the sample3 changed by $60^{\circ}$, the power output of sample2 was 3.8[kW], the power coefficient was 0.12, and the power output of sample3 was 6.0[kW], the power coefficient was measured as 0.18. So the power output of sample 3 was 58% higher than that of sample2, and the power coefficient was increased by 50%. The power coefficient was 0.18 and the wind speed was changed to 10[m/s] at 6.0[kW] at wind speed of 7[m/s] by fixing main blade open angle of $120^{\circ}$ and angle of $60^{\circ}$. The output was measured at 7.7[kW] and the power coefficient at 0.23. When the wind speed was high, the power output increased by 28% and the power coefficient increased by 83%. Also, sample4 was 103% higher in output and 92% more in efficiency than sample2.

키워드

참고문헌

  1. Shin, J. Y., Son, Y .S., Cha, D. G., Lee, C.H.Hwang,I.C. "Aerodynamic characteristics of a vertical axis wind turbine blade" Journal of the Korean Society of Marine Engineering Vol.30, No.8, pp.877-884 Procedia 61, pp. 1275-1278. 2006,
  2. Kim, D. K., Kim, M. K., Cha , D. K., Yoon , S. H., Yang , C. J., "Design of Drag-type Vertical Axis Miniature Wind Turbine Using Arc Shaped Blade" The KSFM Journal of Fluid Machinery Vol.9, No.2, pp.7-12, 2006
  3. Park,C.,Park,G,S.,W.G.,S.H.,"Numerical Analysis of Wind Turbine of Drag Force Type with chang of Blade Number and Pitch Angle"Journal of the Koera Society of Computational Fluids Engineering Vol.10, pp. 61-64, 2004
  4. Moutsoglou,A.,"Performance Tests of a Benesh Wind Turbine Rotor and a Savonius Rotor," Wind Engineerin , Vol.19,No.6,pp.349-362, 1995
  5. Mojola,O.O. and Onsasnys,O.E., "Performance Testing of a Savonius Windmill Rotor in Shear Flows" Journal of Wind Engineering, Vol.8, No.2, p.109,1984
  6. Menet.J. L.,"A Double-Step Savonius Rotor for Local Production of Electricity : a Design Study Renewable Energy" Fuel and Energy Abstracts, Vol. 29,issue,pp. 1843-1862,2004
  7. Ryu I.H,Kim J.H,Kim B.G., LeeK. S., Yang. C.J,"A Study on Vertical Axis Wind Turbine Performance in Different Blade Shapes, Korean Society for Fluid Mchinery, summer symposium, pp.29-33, 2016
  8. Kim, J. H., Kim, J .B., Oh, Y. L., , "Performance Prediction of Wind Power Turbine by CFD Analysis" Journal of the Korean Society of Mechanical Engineers Vol.37, No.4, pp.423-429, 2013 https://doi.org/10.3795/KSME-B.2013.37.4.423
  9. Jung,C.P.,"A Study of Vertical Axis Wind Turbine"Journal of Korea Institute of Information, Electronics, and Communication Technology, Vol.10,No.5 pp.389-395,2017 https://doi.org/10.17661/jkiiect.2017.10.5.389