Composite rotor system of wind motor

一种风力发动机、复合转子的技术，应用在风力发动机的控制、风力发动机、与风向一致的的风力发动机等方向，达到优异捕风效率、拓宽速度范围和地域范围的效果

Inactive Publication Date: 2009-06-17
SHANGHAI FOREVOO WINDPOWER TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In short, as far as the various technical routes that have been disclosed are concerned, none of them can solve the difficult problem of using one wind turbine at the same time to solve the problem of low-speed and high-speed high-efficiency wind energy utilization.

Method used

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  • Composite rotor system of wind motor
  • Composite rotor system of wind motor
  • Composite rotor system of wind motor

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Experimental program
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Embodiment Construction

[0042] Below in conjunction with accompanying drawing and embodiment the invention is described in further detail:

[0043] Such as figure 1 Shown is a preferred embodiment of a pilot rotor unit composed of 6 blades. Obviously, it has a large number of blades, a large blade area, and a large angle of attack, so the overall wind-catching ability is strong, and it is easy to capture when the wind speed is low. Wind energy, but after it obtains a certain rotation speed, the aerodynamic assistance it receives is also greatly increased, and the efficiency of wind energy utilization is greatly reduced. This feature belongs to common knowledge in the field of aerodynamics and wind energy technology, so this manual will not repeat it.

[0044] Such as figure 2 Shown is a preferred embodiment of the main rotor unit composed of 3 blades. Obviously, compared with the pilot rotor unit, it has fewer blades, smaller blade area, and smaller angle of attack, so the wind-catching ability at...

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PUM

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Abstract

The invention provides a controllable compound birotor system for a windmill, which simultaneously uses a pilot rotor working under the condition of low speed and a main rotor working under the condition of high speed, wherein, by the proper switch of an overrunning clutch, the windmill obtains the larger starting torque under the condition of low wind speed, catches and utilizes the wind energy with low wind speed after starting, and gives full play to the advantage of excellent wind catching efficiency of the main rotor under the conditions of high wind speed and high rotating speed, thereby catching and utilizing the wind energy of low and high wind speed, greatly widening the developable and utilizable speed range and the territorial scope of the windmill and providing convenience for the popularization and the utilization of the windmill.

Description

technical field [0001] The invention relates to a wind wheel rotor system of a wind turbine, in particular to a controllable dual-rotor composite rotor system. Background technique [0002] One of the outstanding difficulties in the field of wind engine technology is the lack of effective capture of low wind speed wind energy, thus restricting the use of wind turbine space. Due to the lack of sufficient starting torque under low wind speed conditions, low-speed wind energy cannot be captured. For horizontal axis wind turbines, it is generally considered that 3-4 m / s is a bottleneck. Wind energy below this value cannot be effectively captured and cannot be formed. The ideal rotational torque is used to drive a generator, etc., and is generally cut off. However, according to statistics, in areas that are conveniently developed by humans, areas with wind speeds less than 4 m / s account for no less than 85% of the total land area, which means that in most areas and most geograph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/02F03D9/00F16D41/12F16D41/06
CPCF05B2260/403F05B2260/85F03D1/025Y02E10/722F03D11/02F03D15/00Y02E10/72F03D1/02F03D7/0276
Inventor 张云龙张红英
Owner SHANGHAI FOREVOO WINDPOWER TECH CO LTD
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