Plasma flow control method for suppressing flow separation of suction surface of wind turbine blade

Abstract

The invention relates to a plasma flow control method for suppressing the flow separation of a suction surface of a wind turbine blade. The plasma flow control method comprises the following steps of: asymmetrically distributing two metal electrodes at both sides of an insulating material to form a group of plasma exciter, wherein one metal electrode is exposed in the air, while the other metal electrode is embedded in the insulating material; arranging at least one group of plasma exciter on the suction surface of the wind turbine blade in a mounting mode capable of ensuring that a plasma induced flow direction is the same as a main flow direction; applying plasma excitation voltage on the two metal electrodes of the plasma exciters, and generating low-temperature plasma above the metal electrodes embedded in the insulating material; and transferring energy to a boundary layer through the collision of ions and neutral gas molecules to ensure that a horizontal direction jet flow with a static flow of zero is formed by surrounding air so as to accelerate air flows in the boundary layer. The plasma flow control method has the advantages of simple and compact structure, quick reaction, low energy consumption and the like.

Description

technical field [0001] The invention relates to the field of energy technology and is used in the wind power generation industry, in particular to a method for suppressing the flow separation of the suction surface of a wind turbine blade and improving the power generation efficiency of a wind turbine, and more specifically relates to a method for suppressing the flow separation of the suction surface of a wind turbine blade Plasma flow control method. technical background [0002] Energy is an important material foundation of the national economy and a basic condition for human survival. The speed of national economic development and the improvement of people's living standards all depend on the amount of energy provided. The gradual depletion of traditional fossil energy and the pollution of the environment have made the energy crisis approaching. my country has become a major energy producer and consumer in the world. With the continuous development of economy and societ...

AI Technical Summary

Problems solved by technology

[0004] During the operation of the wind turbine, the wind speed and wind direction in the environment often change, so the wind turbine often operates at a non-design point, and then there will be flow separation on the suction surface of the blade, resulting in an increase in the resistance of the wind turbine blade and a decrease in lift. , to reduce the output power of the wind turbine

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