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Vertical axis wind mill multiple freedom degree S type lane design method

A design method and a technology with a degree of freedom, which is applied in the direction of wind turbines, wind turbines, mechanical equipment, etc. at right angles to the wind direction

Inactive Publication Date: 2008-02-13
SHANGHAI UNIV
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AI Technical Summary

Problems solved by technology

[0004] In order to improve the utilization rate of wind energy, people have spent a lot of energy to study the blade design method of the horizontal axis wind turbine, but how to optimize the design of the S-shaped blade of the vertical axis wind turbine? How to improve the wind energy utilization rate of S blades? Work in this area has rarely been reported

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  • Vertical axis wind mill multiple freedom degree S type lane design method
  • Vertical axis wind mill multiple freedom degree S type lane design method
  • Vertical axis wind mill multiple freedom degree S type lane design method

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Embodiment Construction

[0018] A preferred embodiment of the present invention is:

[0019] The S-shaped blade is composed of three arcs that are tangent to each other, and the central angles are α 1 、α 2 、α 3 , with radius r 1 、r 2 、r 3 . The radius of rotation of the rotor is R.

[0020] Utilize existing optimization methods to carry out optimal design on the above six design degrees of freedom, genetic algorithm, optimization method or other optimal design methods can be used. This embodiment applies the optimization method proposed by Professor Hua Luogeng. Table 1 is an orthogonal table with 6 design parameters and 5 design levels for each parameter. Using Table 1, apply wind tunnel experiments or flow field numerical simulation techniques to conduct experiments or calculations on 25 parameter combinations, and obtain the wind energy utilization rate under each combination. Then, according to the idea of ​​optimization method, the optimal values ​​of the six design parameters are obtaine...

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Abstract

The invention discloses a design method for a multi-freedom S-shaped vane of a vertical axis wind turbine. The S-shaped vane is designed to be formed by N sections of circular arcs of different radiuses and central angles. Moreover, every two neighboring sections of circular arcs are tangent with each other. Each section of circular arc is provided with two freedom degrees, which are the central angle Alpha and the radius r. The S-shaped vane consisting of n sections of circular arcs is provided with 2N designed freedom degrees. With optimized combination of the 2N designed freedom degrees, a design parameter for a multi-freedom S-shaped vane, which is provided with the highest rate of wind energy use, is concluded.

Description

technical field [0001] The invention relates to a design method for the blade shape of a wind turbine, in particular to a design method for a multi-degree-of-freedom S-shaped blade of a vertical axis wind turbine. Background technique [0002] Wind energy is the fastest-growing clean energy among renewable energy sources, and it is also the most promising power generation method for large-scale development and commercialization. During the 10 years from 1993 to 2003, the annual growth rate of wind power generation in the world reached 29.7%. By the end of 2003, the global installed capacity of wind power reached 40.3 million kilowatts, and wind power generation accounted for 0.5% of the world's total electricity. Among them, the total installed capacity in Europe is 28.71 million kilowatts, accounting for 73% of the world's installed wind power capacity. In 2003, the cumulative installed capacity of wind power in Germany reached 14.61 million kilowatts, accounting for more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/06
CPCY02E10/74
Inventor 黄典贵曹紫胤
Owner SHANGHAI UNIV