High-performance blade of wind turbine
A high-performance, wind turbine technology, applied to wind turbines, wind turbines that are consistent with the wind direction, wind power generation, etc., can solve the problems affecting the power and torque of the wind turbine, and the unreasonable structural shape and size parameters of the wind turbine blades. Achieve the effect of improving power and torque transmission and reducing energy loss
Inactive Publication Date: 2012-12-12
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
Since the aircraft propeller and the air are in a "master-slave" dynamic relationship, while the generator wind rotor blades are in a "slave-master" dynamic relationship with the air, the inversion of this "master-slave" dynamic relationship will inevitably lead to certain structural shapes and Unreasonable size parameters, which seriously affect the power and torque of the wind wheel
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[0010] The present invention provides a high-performance blade of a wind turbine, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0011] The wind rotor of a traditional wind turbine and the cross-section of the blade at the radius r of the wind turbine are as follows: figure 1 and figure 2 As shown, B is the projection length of the blade on the rotation plane of the wind rotor, β is the angle between the opposite direction of the implicated motion speed u of the point where the air leaves the blade on the windward side of the cross section and the air relative to the outflow speed w of the blade, and v is the wind speed; Assuming that the length of the wind rotor blades in the direction of the rotation axis of the wind rotor is s, the time t for the wind to pass through the wind rotor is: Taking the micro-segment dr along the radial direction of the wind rotor at this section, the air flow ...
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The invention belongs to a wind power generating equipment, particularly relating to a high-performance blade of a wind turbine. One section of a cross section windward side of the blade, at which air is separated from the blade, is a line segment, and the line segment and air on the line segment have collinear involvement kinematic velocity direction. The high-performance blade of the wind turbine can effectively improve power and torsion transfer and reduce energy loss. For example, when a blade tip speed ratio lambda is equal to 11, and if beta is respectively designed to 0 degrees from 3 degrees, 4.1 degrees and 5 degrees, the power and the torsion are respectively improved by 35.2%, 94.6% and 260.8% at most.
Description
technical field [0001] The invention belongs to wind power generation equipment, in particular to a high-performance blade of a wind power machine. Background technique [0002] At present, the rotor blades of wind turbines are basically manufactured by directly adopting or imitating aircraft propellers. For example, the most commonly used NACA series is a series of propellers for laminar airfoils developed during World War II. Since the aircraft propeller and the air are in a "master-slave" dynamic relationship, while the generator wind rotor blades are in a "slave-master" dynamic relationship with the air, the inversion of this "master-slave" dynamic relationship will inevitably lead to certain structural shapes and The unreasonable size parameters will seriously affect the power and torque of the wind wheel. Contents of the invention [0003] The purpose of the invention is to provide a high-performance blade of a wind turbine capable of increasing the power and torque...
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IPC IPC(8): F03D1/06
CPCY02E10/72Y02E10/721
Inventor 张照煌
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)