The principle of wind power generation

The principle of wind power generation is to use wind power to drive the windmill blades to rotate, and then increase the speed through the speed reducer to promote the generator to generate electricity. Simply put, wind power generation is the process of converting wind energy into mechanical energy and then converting mechanical energy into electrical energy.

This process has no fuel, no radiation, no air pollution, and it is a clean energy source. At present, wind power generation is very popular in Finland, Denmark and other countries, and China has also begun to vigorously advocate it in the western region.

100kw wind turbine generates 0. 1 kWh in one turn at rated speed. The common 2MW direct-drive wind energy generator can generate 2000 kWh every 60 minutes under the condition of sufficient and stable wind energy. However, it takes 3.5 seconds for each revolution of the fan blade, and 60 minutes is 3600 seconds, so the power generated by the generator per second is 0.56 degrees.

Usually, the fans from 50W to 300W are 12V, the range from 300W-800W is 24V, and the fans above 800W are above 36V. In general, the battery is charged by the controller, which is also related to the power of the wind turbine.

It's about the power output of wind turbines at rated power. That is to say, the wind speed should reach the rated wind speed. Wind power generation is an important power generation channel, and now the world is developing rapidly, and wind turbines are getting bigger and bigger.

Disadvantages of wind power generation

1, the air volume can't be controlled: wind is the most basic thing in wind power generation, but wind power generation is different from solar energy and hydropower. Although it contains great energy, it is irregular. The track of strong winds will be diverted at any time, which is very troublesome to monitor. This brings difficulties to the accurate positioning of wind farms, and only rough calculations can be made through previous data. Even so, the output value cannot be guaranteed.

2. Environmental impact: Although wind power does not produce radiation and air pollution, rotating fans still have a great impact on bird migration. Dead birds can often be found under the rotating blades of the fan, or birds can be caught directly in the engine room.

3. Noise pollution: Theoretically, the decibel number of the fan is within the acceptable range of human beings. However, this is only theoretical. At present, many wind turbines are imported from abroad, so it is easy to "acclimatize" when used in China.

Baidu encyclopedia-wind power generation