How wind energy works pdf

How does a wind turbine work

  1. Home
  2. Wind & Energy
  3. How does a wind turbine work

The kinetic energy becomes electrical energy.

Put simply, a wind turbine takes energy from the blowing wind via the rotor. The wind sets the rotor in rotation - the "rotary energy" is then converted into electricity with the help of a generator, similar to a bicycle dynamo. From there, the electrical energy goes into the power grid. The height of the system is very important. The larger the system, the more evenly the wind blows and the more electricity can be generated.

Larger plants - more efficient wind yield

In the lower layers close to the ground, the air is very turbulent, also because of the many obstacles (houses, trees, ...). That is why wind turbines are built as high as possible, because further up the wind blows constantly and evenly. With every meter that a wind turbine is built higher, the electricity yield increases by 1%. With a doubling of the wing length, the yield increases four times. Twice the wind speed generates eight times the yield.

Although wind turbines are high-tech products, production and construction are now possible in the shortest possible time - with low energy consumption. The energy required for the production and construction of a system is generated by the wind turbine itself within 4-6 months.

Types of windmills

Basically two different types of windmills have prevailed today. Similar to cars, where the technology of the diesel and gasoline engine coexist, there are also two different technical approaches for wind turbines.

Gearless system

Here the generator sits right on the rotor. It turns as fast as the rotor and must therefore be very large. Similar to a bicycle dynamo, it generates electrical current from the rotational movement.

System with gear

In a system with a gearbox, the gearbox sits between the rotor and the generator. As a result, the generator can be smaller and it rotates faster than the rotor - and up to 100 times as fast.

Related Links

BWE: Technology and functionality of modern wind turbines
WilderWind: Easy explanation of wind turbines for children

Print pageEmail page