Abstract
This article presents a method to adjust the elements of a small wind power plant to the wind speed characterized by the highest annual level of energy. Tests were carried out on the basis of annual wind distributions at three locations. The standard range of wind speeds was reduced to that resulting from the annual wind speed distributions in these locations. The construction of the generators and the method of their excitation were adapted to the characteristics of the turbines. The results obtained for the designed power plants were compared with those obtained for a power plant with a commercial turbine adapted to a wind speed of 10 mps. The generator structure and control method were optimized using a genetic algorithm in the MATLAB program (Mathworks, Natick, MA, USA); magnetostatic calculations were carried out using the FEMM program; the simulations were conducted using a proprietary simulation program. The simulation results were verified by measurement for a switched reluctance machine of the same voltage, power, and design. Finally, the yields of the designed generators in various locations were determined.
Highlights
Wind farms account for a significant share of the world’s electricity production
The most important factor for annual energy production is the selection of the appropriate turbine characteristics
Small commercial wind power plants adapted to a wind speed of 10–12 mps are not optimal in places with poor or even medium wind conditions
Summary
Development in a given location is determined mainly by wind conditions [1,2,3,4,5,6,7,8,9,10]. In places far from a power grid, electricity can be provided only by means of renewable energy sources with their own energy storage systems, most often accumulators. In this case, low-voltage wind generators and photovoltaic panels are most often used [9,29,30,31,32,33,34,35,36]
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