Power spectrum analysis for determination of the number of vertical axis wind turbine blades

  • Stanisław Anweiler Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland
  • Waldemar Fedak Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland
  • Wojciech Gancarski Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland
  • Roman Ulbrich Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland
Keywords: renewable energy sources, wind turbine, VAWT, power spectrum, hydrodynamic force

Abstract

Technology of wind exploitation has been applied widely all over the world and has already reached the level in which manufacturers want to maximize the yield with the minimum investment outlays. The main objective of this paper is the determination of the optimal number of blades in the Cup-Bladed Vertical Axis Wind Turbine. Optimizing the size of the Vertical Axis Wind Turbine allow the reduction of costs and increase the output. The target is the maximum power of the rotor. The optimum number of Vertical Axis Wind Turbine blades evaluation is based on analysis of a single blade simulation and its superposition for the whole rotor. The simulation of working blade was done in MatLab environment. Power spectrum graphs were prepared and compared throughout superposition of individual blades in the Vertical Axis Wind Turbine rotor. Some wind tunnel measurements of the hydrodynamic force according to pitch angle of the blade are also shown. The major result of this research is the Vertical Axis Wind Turbine kmax ratio power characteristic. On the basis of the analysis of the power spectra, optimum number of the blades was specified for the analysed rotor. Power spectrum analysis of wind turbine enabled the specification of the optimal number of blades, and can be used regarding investment outlays and power output of the Vertical Axis Wind Turbine.

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Author Biographies

Stanisław Anweiler, Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland

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Stanisław Anweiler is a senior researcher and academia teacher in Opole University of Technology, Faculty of Mechanical Engineering, Department of Environmental Engineering. His Scientific work covers the area of Renewable Energy Sources, Sustainable Development, Industrial Processes and Smart Technologies. His academia work is in the area of Renewable Energy Sources and Thermodynamics, Climate Change Mitigation. Received his M.Sc. degree in Environmental Engineering and next Ph.D degree in Machinery Construction and Operation in 2001 and 2004 respectively. He has participated in 2 national research projects, presenting results of his work at 25 international and national conferences, published more than 50 scientific papers in international and national journals, book chapters, as well as conference proceedings.

Waldemar Fedak, Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland

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Waldemar Fedak received his M.Sc. degree in Computer Aided Design and Testing Machines from the Faculty of Mechanical Engineering at the Opole University of Technology in 2014 and in the same year he began his doctoral studies in Machine Construction and Operation, leading to the optimization of the VAWT design for the energy production of renewable sources in hybrid systems. His research interests are focused on the issues of autonomous power systems and the efficiency of renewable energy production. He co-authored 7 scientific articles in national and international journals and monographs.

Wojciech Gancarski, Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland

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Wojciech Gancarski received M.Sc. diploma in mechanics and machine construction in 2014 at the Faculty of Mechanical Engineering at Opole University of Technology. His professional experience includes the design of buses, trailers and technological equipment for the construction of rail vehicle components. Scientific interests focus on issues related to determining the durability of wind turbine components with a vertical wind axis and a description of the wind forces acting on them. The results of his work were presented at three national conferences, he published four articles in book chapters as well as conference materials.

Roman Ulbrich, Opole University of Technology, Department of Mechanical Engineering, 5 Mikołajczyka st., 45-758 Opole, Poland

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Roman Ulbrich in 1978 studied at the Faculty of Mechanical Engineering of the Higher School of Engineering. He was later employed as a research scientist at his home university. In 1981 he obtained his doctorate in technical sciences at Wroclaw University of Technology. In 1990, the Council of the Faculty of Chemistry at the Silesian University of Technology in Gliwice awarded him a postdoctoral degree in chemical engineering in the field of  chemical engineering on the basis of his dissertation on gasliquid dual-phase identification. In 1991-1992 he was on a scholarship to the Humboldt Foundation, and in 1994 and 1996 at the Institute of Process Engineering at the University of Hannover. He became an associate professor at Opole Technical University. In 2003 he was awarded the title of professor of technical sciences, and shortly thereafter became a full professor at the Opole University of Technology, where he headed the Department of Environmental Engineering. In the years 1999-2002 he held the position of Deputy Dean for Student Affairs of the Faculty of Mechanical Engineering. The area of his scientific interests is multiphase flows and metrology, rational energy management and alternative energy sources. He has authored more than 450 scientific publications and 18 patents. He has promoted 21 doctors so far. He is a member of the Power Engineering Department of the Polish Academy of Sciences, the Section of Multi-phase Flows of the Committee of Fluid Mechanics and Thermodynamics and Combustion of the Polish Academy of Sciences and the Committee of Thermodynamics of the Polish Academy of Sciences.

Published
2017-11-01
How to Cite
Anweiler, S., Fedak, W., Gancarski, W. and Ulbrich, R. (2017) “Power spectrum analysis for determination of the number of vertical axis wind turbine blades”, Journal of Mechanical and Energy Engineering, 1(2), pp. 153-162. Available at: http://jmee.tu.koszalin.pl/ojs/index.php/jmee/article/view/32 (Accessed: 15December2018).
Section
Mechanical Engineering