DOI QR코드

DOI QR Code

A Study of Vertical Axis Wind Turbine

수직축 풍력터빈에 관한 연구

  • Received : 2017.09.21
  • Accepted : 2017.10.19
  • Published : 2017.10.30

Abstract

This paper showed the difference in the optimum conditions by using the ANSYS CFX simulation program with the changes of the main-blade angle and sub-blade angle. Main-blade Shape 4,which had angle $45^{\circ}$ while other Shapes with angle $0^{\circ}$, was increased to 157.2[%] to 263.2[%] in the power and was increased to 110[%] to 250[%] in the power coefficient. Moreover, when the Shape 5 Fin length of main-blade doubled, the power was 70.8[%] when compared with Shape 1 and 27.5[%] with shape 4.If the main-blade geometry equals shape 1 in the case structure, The power of Case1 was increased to 13.3[%] when compared with Case2. Also, the power coefficient was increased to 15.4[%]. When sub-blade angle was $45^{\circ}$, main-blade was better than the Fin type than the Bended type. The power of Case4 was increased to 47[%] when compared with Csae1 and increased to 13.6[%] with Case 3. Also, the power coefficient was 46.7[%] when compared with Case 1 and 15.8[%] with Case 3.

본 논문은 주 블레이드 각도와 보조 블레이드 각도를 변화 주어서 ANSYS 유동해석 시뮬레이션 프로그램을 이용하여 최적의 조건을 찾고자 하였다. $45^{\circ}$로 주 블레이드 각도를 변경한 Shape 4는 주 블레이드 각도를 $0^{\circ}$로 한 Shape들 보다 효율은 110% ~ 250% 증가하고, 출력은 157.2% ~ 263.2% 증가했다. 그리고 주 블레이드의 Fin 크기를 2배 크게 변경한 Shape 5의 출력은 Shape 4에 비해 27.5%, Shape 1에 비해 70.8% 증가하였다. Case 구조에서 주 블레이드 형상이 Shape 1로서 동일한 경우에는 Case 1은 Case 2보다 효율은 15.4%, 출력은 13.3% 증가하였다. 그리고 $45^{\circ}$로 보조 블레이드 각도를 한 경우, 주 블레이드 형상이 핀 형태보다 벤디드 형태가 우수하였다. Case 4는 Case 1보다 47%, Case 3보다 13.6% 출력이 증가하였고, 효율은 Case 1보다 46.7%, Case 3보다 15.8% 증가하였다.

Keywords

References

  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. 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
  5. 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
  6. Magdi Ragheb and Adam M. Ragheb, "Wind Turbines Theory The Betz Equation and Optimal Rotor Tip Speed Ratio", Fundamental and Advanced Topics in Wind Power, pp.27-33, 20, June, 2011.
  7. Ministry of Trade, Industry and Energy, "Development and Implementation of Optimal Design System for Electric Machines and Power Apparatus. (400kVA power transformer, 500kW wind generator, 5MW PM type electric machine)", Dong-A University, Korea Electrical Engineering & Science Research Institute, R-2007-2-060, pp.75-82, 3,2010

Cited by

  1. 시뮬레이션을 통한 수직축 풍력발전에 관한 연구 vol.11, pp.3, 2017, https://doi.org/10.17661/jkiiect.2018.11.3.241
  2. ANSYS 프로그램을 이용한 풍력발전에 관한 연구 vol.11, pp.5, 2018, https://doi.org/10.17661/jkiiect.2018.11.5.565