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Electric generator

A generator and nacelle technology, applied in the direction of engines, wind power generation, wind turbines, etc., can solve the problems of inability to effectively control local load fluctuations, excessive use of pitch devices, large inertia, etc., to achieve strong typhoon resistance, compact layout, The effect of slowing down the load

Inactive Publication Date: 2019-05-31
BENXI POWER SUPPLY COMPANY OF STATE GRID LIAONINGELECTRIC POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the size of the blade increases, the inhomogeneity of the flow distribution along the span direction of the blade increases, and the pitch control strategy gradually shows the following deficiencies: the synchronous mobilization of the entire blade cannot effectively control the fluctuation of the local load, and it is uneconomical, and the inertia is large, and it is easy to lead to excessive use of pitch gear, etc.

Method used

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Examples

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Effect test

Embodiment 1

[0018] Embodiment 1: as figure 1 As shown, a wind power generator of the present invention includes an independently variable pitch wind rotor 1, a direction-changing gear box 2, an airtight vertical nacelle 5, an electric control cabinet, a generator 4, and a yaw device 6. The wind rotor 1 Connect the generator 4 in the vertical nacelle 5 through the direction-changing gearbox 2, the vertical nacelle 5 is placed on the top of the tower 7, and the yaw device 6 is installed between the vertical nacelle 5 and the tower 7 (using the existing structure) .

[0019] A speed-up gearbox is connected between the direction-changing gearbox and the generator.

[0020] The wind rotor blades are two pieces, which are evenly arranged along the circumference of the hub, and the side wings are arranged at a distance of 5-15% from the tip of each blade. The width of the side wings is 1 / 10-1 / 7 of the width of the blade, and the length is the length of the blade. 1 / 6-1 / 8 of. The reversing gea...

Embodiment 2

[0021] Embodiment 2: This embodiment is different from Embodiment 1 in that: the direction-changing gearbox in this example is a direction-changing speed-up gearbox; the wind rotor blades are three.

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Abstract

The invention relates to an electric generator, and belongs to the technical field of electricity generation. The electric generator comprises a wind wheel capable of independently changing pitch, a transmission gear box, a sealed vertical cabin, an electric control cabinet, an electric generator body, and a yaw device, wherein the wind wheel is connected with the electric generator body in the vertical cabin through the transmission gear box; the vertical cabin is placed at the top end of a pylon; and the yaw device is arranged between the vertical cabin and the pylon. The electric generatordisclosed by the invention adopts the vertical cabin, so that the whole cabin is compact, and a cabin hood is removed; the generator is high in anti-typhoon capacity; and the electric generator adoptsmanners of independent pitch changing and wind wheel intelligent panel control, so that the load of wind mill blades and the load of the pylon can be effectively retarded, the life of the wind mill is prolonged, and the reliability of the wind mill is improved.

Description

technical field [0001] The invention belongs to the technical field of power generation, and in particular relates to a generator. Background technique [0002] Offshore wind resource conditions are better than those on land, and offshore wind power generation has unique advantages, and its development has attracted great attention from governments around the world. In order to reduce the average cost of manufacturing, transportation, installation and maintenance, etc., and then reduce the cost of electricity per unit area and increase the power generation per unit area, the unit capacity and blade size of offshore wind turbines continue to grow steadily. At present, the rated power is generally between 1MW and 5MW, and wind turbines that can successfully operate with a maximum rated power of 6MW have been successfully installed in the United States, Europe, and China. A large wind turbine with a rated power of 10MW (rotor diameter 144m) or even a rated power of 20MW (diame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D9/25F03D15/00F03D13/25F03D1/06F03D80/00F03D80/60F03D7/02
CPCY02E10/72Y02E10/727
Inventor 李世光徐钢高荣军张建军胡旭
Owner BENXI POWER SUPPLY COMPANY OF STATE GRID LIAONINGELECTRIC POWER SUPPLY
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