ANALYSIS OF INFLUENCE OF INDUSTRIAL SCALE WIND POWER UNITS DESIGN ON THEIR ECONOMIC AND POWER CURVES

The paper analyzes the influence mechanisms of a number of design parameters, in particular wind rotor (WR) diameter, the number of blades and their air dynamic characteristics, etc. on economic and power curves of wind units (WU) of small, medium and high output. It is considered the impact of the average annual wind speed on cost price of WPU production and the cost of produced power. The paper researches the influence of the application of a packet type multiplier on power and economic curves of WPU and the influence mechanisms of a number of aerodynamic coefficients of the blades, in particular of the coefficients of lift, drag, ram pressure, lateral force and braking on numerical values of WR output coefficient and high-speed running factor. The authors also consider the nature of the changes of these parameters depending on different angles of the blades attack, located between the direction of the wind flow and the blade chord; the tangent of the angle defined by the ratio of the lift coefficient by a factor of ram pressure and characterizing the quality and profile of the blade; as well as on the scope of the blades determined from the ratio of the length of the blades to the length of its chords.

wind power unit, multiplier, packet-type multiplier (PTM), wind rotor, blades, alternator, power output, efficiency, WR diameter

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