A wind turbine can generate 0.56 kilowatt-hours of electricity per revolution. As long as the wind speed reaches 3 meters/second (the feeling of a gentle breeze blowing on your face), the windmill can rotate to generate electricity. A 100-kilowatt wind turbine generates 0.1 kWh of electricity per revolution at rated speed. A 2MW direct-drive wind energy generator can generate 2,000 kilowatt-hours of electricity every 60 minutes when the wind energy is sufficient and stable. 60 minutes is 3600 seconds, so the amount of electricity generated by the generator per second is 0.56 degrees.
Wind power generates approximately 1.4 kilowatt hours of electricity per cycle.
Take a 1,500-kilowatt wind turbine unit as an example. The blades of the unit are about 35 meters long (about 12 stories high). Each rotation of the wind turbine takes about 4-5 seconds (but the blade tip speed at this time can reach more than 280 kilometers per hour, comparable to the speed of a high-speed train) and can generate about 1.4 kilowatt hours of electricity. Under normal full power conditions, one day's power generation can be used by 15 families for one year.
Generally speaking, Category 3 winds are valuable for utilization. However, from an economic and reasonable perspective, wind speeds greater than 4 meters per second are suitable for power generation. According to measurements, a 55-kilowatt wind turbine has an output power of 55 kilowatts when the wind speed is 9.5 meters per second; when the wind speed is 8 meters per second, the power is 38 kilowatts; when the wind speed is 6 meters per second, the output power of the unit is only 55 kilowatts. 16 kilowatts; and when the wind speed is 5 meters per second, it is only 9.5 kilowatts.
The principle of wind power generation :
The principle is to convert the kinetic energy of the wind into mechanical kinetic energy, and then convert the mechanical energy into For electric kinetic energy, this is wind power. The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then use a speed increaser to increase the speed of rotation to prompt the generator to generate electricity.
According to windmill technology, power generation can start at a breeze speed of about three meters per second (the degree of breeze). Wind power is becoming a craze around the world because it does not require the use of fuel and does not produce radiation or air pollution.
The devices required for wind power generation are called wind turbines. This kind of wind turbine can be roughly divided into three parts: wind wheel (including tail rudder), generator and tower.
The wind wheel is an important component that converts the kinetic energy of the wind into mechanical energy. It is composed of several blades. When the wind blows towards the blades, aerodynamic force is generated on the blades to drive the wind wheel to rotate. The blade material requires high strength and light weight, and is often made of fiberglass or other composite materials (such as carbon fiber).
The iron tower is the structure that supports the wind wheel, rudder and generator. It is generally built relatively high in order to obtain larger and more uniform wind force and to have sufficient strength. The height of the tower depends on the impact of ground obstacles on wind speed and the diameter of the wind wheel. It is generally in the range of 6-20 meters.
The function of the generator is to transfer the constant speed obtained from the wind wheel to the power generation mechanism through speed increase for even operation.rotation, thus converting mechanical energy into electrical energy.
Reference for the above content: Baidu Encyclopedia - Wind Power