Abstract
The purpose of the work is to select the design concept of the wind power plant and the method of transformation of mechanical wind energy into electric energy depending on the wind speed in the given area. In order to solve the first task, it is proposed to approximate the distribution of wind speed with the help of the Raleigh Law, to use incomplete gamma functions and to compare the average annual power of wind plants with the vertical and horizontal spin axis. At low wind speeds dependence of wind plant mass with vertical spin axis with different types of generators is analyzed. The multiplication unit design is selected. Friction forces are determined in planetary multiplication unit having high efficiency. The effect of these forces on wind power plant efficiency is analyzed.
Highlights
The gradual depletion of fossil fuel deposits, the increase in the cost of fossil fuel extraction, the decrease in their availability and the transition to deposits in hard-to-reach areas have led to the need to turn to unconventional sources of energy
An analytical representation of the wind speed distribution makes it possible to estimate which wind plant design concept is more advantageous in terms of using wind potential
The analytical representation of the wind speed distribution allows to estimate which wind plant design concept is more advantageous in terms of using wind potential in a given area for a long time
Summary
The gradual depletion of fossil fuel deposits, the increase in the cost of fossil fuel extraction, the decrease in their availability and the transition to deposits in hard-to-reach areas have led to the need to turn to unconventional sources of energy. Wind power plants with a horizontal spin axis of the wind wheel, having high angular speeds of the rotor due to the special profile of the blades, start to operate only at some wind speed, usually more than 4 m/s. Wind power plants with a vertical spin axis are not limited from the bottom to start work, but today have a lower wind flow energy utilization factor c p. The most convenient asynchronous motor requires high rotor speeds, and the windwheel with a vertical spin axis rotates at a low angular speed. The purpose of the study is to determine the conditions under which it is advantageous to use a wind power plant design concept, including the type of wind wheel and the structure of the electromechanical part.
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