The blades, which turn the rotor shaft of the generator by moving with the force of the wind, convert the kinetic energy of the air into mechanical energy and then into the mechanical energy. to electrical energy it transforms.

The three-blade design is very important in increasing energy efficiency. In addition to the efficiency cost, low noise and durability Factors are also taken into account.

One side of the wings is straight, the other side is curved outward.

They have a structure similar to airplane wings. This one aerodynamic design Thanks to the wind, the wind moves faster by recording a longer distance in the curved part of the wing. The pressure on the curved side is greater than on the straight side, increasing the force and allowing the blades to rotate better.

These systems generate the required torque for electricity generation with every 120 degrees of rotation.

If there are more than three wings, more wind will hit the wings, but It does not affect the number of turns. As the number increases, each wing blocks the wind from the wing below. Since it will slow down the rotational speed, the electricity production will also be lower. This reduces energy efficiency.

If more wings aren’t efficient, why not choose one or two wings?

If there were only one wing, a faster turn would be achieved, but this balance and sound would cause problems.

Two blades are actually more efficient, but these turbines require special shock absorbers and a specially designed hub to maintain balance and generate electricity. This situation because it increases costs not preferred.

It is also important to choose an odd number rather than an even number.

If there are even numbers, one of the wings will be at the top and one at the bottom during the turn. (in line with the tower of the turbine) is found. In such a case, more wind force is exerted on the upper wing than on the lower wing.

Because the base of the wind turbine negatively influences the movement of the air around the lower blade. The wings move back and forth in the vertical position. would upset the balance of the turbine. If there is an odd number, the balance is provided as in a wheel.

Summarized; thanks to the three-wing design energy efficiency, durability, balance, noise level is made most efficiently.

Sources: TUBITAK, Engineer