Abstract: As renewable energy wind energy attracts more and more attention, the coverage rate of wind turbines is also getting higher and higher. Anyone who has seen a wind turbine knows that the three blades on each wind turbine do not rotate very quickly, so people think that the power generated by the wind turbine is not high. Then you know that the wind turbine How many kilowatt hours does it cycle? How to choose a small wind turbine? Let’s find out below. 1. How many kilowatt-hours of electricity does a wind turbine generate per revolution?
The power of wind turbines is different, and the electrical energy generated by each rotation of the wind turbine is also different. For example, the most common 2MW direct-drive wind energy generator can generate 2,000 degrees of electricity every 60 minutes when the wind energy is sufficient and stable, and it takes 3.5 seconds for the fan blades to rotate once, which is only 60 minutes. It is 3600 seconds, so the electricity generated by the generator per second is 0.56 kilowatt-hours. Then the electricity generated by the fan of the wind energy generator for each rotation is 0.56×3.5 seconds, which is 1.94 kilowatt-hours of electricity.
2. How to choose a small wind turbine
1. Wind blades
It is best to use high-strength nylon composite materials, which have high strength and good toughness. Anti-ultraviolet, anti-corrosion, resistant to high winds, with good aerodynamic performance and unique strong wind stall protection characteristics.
2. Bearings
It is best to be imported or domestic first-line brands. Such wind turbines have high working efficiency, wear resistance, durability and long service life.
3. Magnetic steel
Magnetic steel is best to use rare earth neodymium iron boron permanent magnets, which have high efficiency, light weight, low energy consumption and high output power.
4. Anti-strong wind tail design
It is best to have a pre-biased tail rudder design, which can automatically and accurately align the windward direction, increase the output power while taking into account both adjustment and strong wind protection.
5. Carbon brush and brush ring structure
Using such a device, the electricity of the wind turbine can be transmitted from the carbon brush to the brush ring, and the brush ring will lead the electricity out; wind power generation When the machine rotates, it will rotate accordingly to prevent the cable from being twisted.
6. Connection method
It is best to use casing connection, which is highly safe, will not cause overspeed, and is very convenient to install. You must know that installing wind turbines in the wild is not only a technical job, but also a physical job. Ease of installation is a boon to field installers.