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.
How much does a wind turbine cost?
More than 10 million. CCTV once reported that a medium-sized motor can generate 5 degrees of electricity without rotating once, and it can rotate once every 5 seconds during a stroke (one revolution every 4 seconds in strong winds ). It can spin 12 times in an hour. and 720 times in one hour. 720×5 degrees=3600 degrees/less hours×0.5 yuan/degree×24 hours=43200 yuan/day×300 days=12.96 million yuan/year.
The cost of a wind turbine is about 10,000 to 30,000 yuan, and the base price depends on the power of the wind turbine. Wind turbines are equipmentelectrical ts that convert wind energy into mechanical work, which drives the rotation of the rotor and ultimately produces alternating current. Wind turbines typically consist of components such as a wind turbine, a generator, a deflector (tail), a tower, a speed-limiting safety mechanism, and an energy storage device.
The operating principle of a wind turbine is relatively simple. The wind wheel rotates under the influence of the wind. It converts the kinetic energy of the wind into the mechanical energy of the wind wheel shaft. driving the wind wheel shaft to produce electricity. Generally speaking, wind energy is also solar energy, so we can also say that a wind turbine is a thermal energy generator that uses the sun as a heat source and the atmosphere as a heat fluid. work.
A wind turbine consists of a nose, a rotor, a tail and a 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 the wind to obtain maximum wind energy; the rotor allows the nose to rotate flexibly to reach 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.
The power of wind energy is entirely determined by the power of the wind turbine. It is always tempting to buy a larger wind turbine, but this is incorrect. The current wind turbine only charges the battery, and the battery stores electrical energy. The amount of electrical energy ultimately used is most closely related to the size of the battery. The size of the power mainly dependsnt of the size of the air volume, not just the size of the power of the machine head.