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Horizontal Axis Wind Turbine
 

Wind is a clean energy, China's wind resources is very rich. Wind power is the main form of wind energy utilization. As the first, this column introduces the basic knowledge about wind turbine aerodynamics, then is the working principle and structure of horizontal axis wind turbines, whose main shaft is parallel to wind direction and with high power coefficient and mature technology; the horizontal axis wind turbine is the most widely used.

The basic part of the courseware can be used as a reference for the junior School Physics Interest Group.

Translator:  The English translation of this column has been strongly supported by Xinjiang Goldwind Technology Co., Ltd. (Zhao Liang, Pang Xiaolong).

 
  Wind Turbine Basics
Wind Turbine Basics
The courseware introduces the aerodynamic basics of the wind turbine through pictures and texts: what is resistance, lift force, blade pressure center, what is the power coefficient, what is the Bates limit, the tip speed ratio, the relative wind speed, and so on.
     
  Wind Measurements
Wind Measurements
The courseware introduces the wind formation and wind level through pictures and texts, and introduces common wind measurement instruments - wind vane, three-cup anemometer, pitch wind speed and direction anemometer, ultrasonic wind speed and direction anemometer.
     
  Horizontal Axis Wind Turbine
Horizontal Axis Wind Turbine
The courseware introduces the basic structure of the horizontal axis wind turbine by introducing the basic principle of the horizontal axis wind turbine rotation, and explains the concepts of the windward wind turbine, the downwind wind turbine, the three-blade wind turbine, the multi-blade wind turbine, and the wind.
     
  Aerodynamic of Blade
Aerodynamic of Blade
The courseware introduces the aerodynamic characteristics of the horizontal wind turbine blade and the cause of the stall through pictures and texts, and introduces the structure of the horizontal wind turbine blade.
     
  Wind Rotor Solidity
Wind Rotor Solidity
 The influence of the actual size of the wind rotor solidity on the running characteristics of the wind turbine is introduced. Why is the wind turbine now mostly a structure of “one pole and three needles”
     
 
Nacelle Equipment and Tower
Introduce the function and arrangement of the main equipment in the nacelle of the horizontal axis wind turbine, and introduce the structure of the tower and the operation mode of the wind turbine.
     
  Wind Turbine Yaw Device
Wind Turbine Yaw Device
Introduce yaw device of the horizontal axis wind turbine: tail vane facing the wind and side wind rotor facing the wind, focusing on the yaw system of the horizontal axis wind turbine.
     
  Wind Turbine Speed Adjustment Mode
Wind Turbine Speed Adjustment Mode
Introduce the speed adjustment mode of the horizontal axis wind turbine: there are mainly the stall adjustment mode and the pitch adjustment mode.
     
  Independent Pitch System
Independent Pitch System
This paper introduces the independent pitch system of horizontal axis wind turbines, mainly including hydraulic pitch system and electric pitch system.
     
  Drive rod Unified Variable Pitch Drive Mechanism
Drive rod Unified Variable Pitch Drive Mechanism
Introduction the drive rod unified variable pitch drive mechanism is a variable pitch device that is controlled by a mechanical mechanism. The courseware introduces the composition and working principle of the unified variable pitch drive mechanism.
     
  Gear Unified Pitch Drive Mechanism
Gear Unified Pitch Drive Mechanism
The introduction of a uniform pitch drive mechanism using a bevel gear is a pitch device that utilizes a worm gear to drive a bevel gear transmission.
     
  Direct Drive Wind Turbine
 Direct Drive Wind Turbine
The main facility location of the direct-drive permanent magnet wind turbine nacelle are introduced through a model.
     
  Doubly-fed Wind Turbine Working principle
Doubly-fed Wind Turbine Working principle
The courseware gives a brief introduction to how the doubly-fed wind turbine achieves the principle of variable speed constant frequency.
     
  Diffusion Amplifier Wind Turbine
Diffusion Amplifier Wind Turbine
Introduce the diffusion amplifier to increase the wind turbine output power and improve the wind-power utilization coefficient.
     
  Altitude Kite Generator
Altitude Kite Generator
Take Google X's high-altitude kite wind turbine as an example to introduce the structure and working principle of generating kite.
     
  Wind Turbine Generator Gearbox
Wind Turbine Generator Gearbox
Introduce the gearbox of wind turbine and introduce the structure and working principle of the cylindrical gear transmission mechanism. The animation segment has a resolution of 640X480 and is 16 seconds long.
     
  Wind Turbine Generator Gearbox
Planetary-Gear-Increase-Speed
Introduce the gearbox of the wind turbine and introduce the structure and working principle of the planetary gear mechanism.
     
  Wind Turbine Bearings
Wind Turbine Bearings
The main shaft bearings of wind turbine use spherical roller bearings, yaw bearings, and four-point contact ball bearings for pitch bearings. The courseware introduces its structure and characteristics.
     
   

 

     

 

 

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