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

A wind turbine blade and plasma technology, which is applied in the control of wind turbines, wind turbines, machines/engines, etc., can solve the problems of flow separation on the suction surface of the blades, reducing the output power of the wind turbine, and increasing the resistance of the wind turbine blades. Achieve the effect of fast response, low power consumption, wide bandwidth and

Inactive Publication Date: 2013-02-06
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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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

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

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Embodiment Construction

[0025] The plasma flow control method for suppressing the flow separation of the suction surface of the wind turbine blade can suppress the flow separation of the suction surface of the wind turbine blade and improve the output power of the wind turbine.

[0026] The plasma flow control method for suppressing flow separation on the suction surface of wind turbine blades provided by the present invention includes the following parts:

[0027] The blades of the wind turbine play the role of driving the generator to generate electricity, and are also the carrier of the plasma exciter;

[0028] Plasma exciter, which generates plasma after being connected to high-voltage electricity, and accelerates the nearby air;

[0029] The plasma excitation voltage is to provide power for the plasma exciter through a high-voltage AC power supply;

[0030] From the perspectives of fluid mechanical aerodynamic thermodynamics and plasma physics, the invention adopts a plasma excitation method su...

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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...

Claims

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Application Information

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IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 李钢杨凌元朱俊强徐燕骥聂超群
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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