7 million large wind turbines, not 27 million. The price of large wind turbines is not fixed, and some large wind turbines cost 7 million. Prices of large wind turbines from different manufacturers also vary due to differences in production costs, technical levels, market competition and other factors.
A megawatt-class wind turbine can produce approximately 1 kilowatt of electricity in one revolution.
A wind turbine is a device that converts wind energy into electrical energy. It is mainly composed of blades, generators, mechanical components and electrical components. According to the different axes of rotation, wind turbines are mainly divided into two categories: horizontal axis wind turbines and vertical axis wind turbines. Currently, horizontal axis wind turbines occupy the dominant position in the market.
The principle of wind energy production is to use energyie wind turbine to turn the blades of the wind turbine, then use a speed multiplier to increase the rotation speed to encourage the generator to produce electricity. According to current wind turbine technology, electricity production can begin at a breeze speed of around three meters per second (the breeze level).
Detailed information:
Small wind systems are very efficient, but they are not are not. just It consists of a generator head, but a small system with some technological content: wind turbine + charger + digital inverter. The wind turbine consists of a nose, a rotor, a tail and blades. Each part is important, and the functions of each part are as follows: the blades are used to receive wind energy and convert it into electrical energy through the nose; the tail allows the blades to always face the direction of thewind to obtain maximum wind energy; the rotor allows the nose to rotate flexibly to achieve. The tail has the function of adjusting the direction; the nose rotor is a permanent magnet and the stator winding cuts the magnetic lines of force to generate electrical power.
For a 1.5 MW wind turbine, the generator spins about 1,800 times per minute, generates 1,500 kilowatt hours of electricity per hour, and the turbine spins about 18 times per minute. This is directly related to the size of the unit. Generally speaking, level 3 winds are useful for use. However, from an economic and reasonable point of view, wind speeds above 4 meters per second are suitable for electricity 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 puissance is 38 kilowatts; wind speed When the wind speed is 6 meters per second, it is only 16 kilowatts; when the wind speed is 5 meters per second, it is only 9.5 kilowatts. It can be seen that the stronger the wind force, the greater the economic benefits.