How to Turned The Wind Power Into Electricity?

Illustration of Wind Turbines. Source Harry Cunningham on Pexels
  • Today, various countries from various parts of the world are intensively developing renewable energy that utilizes wind resources to be converted into electrical energy through windmills.
  • Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity.
  • A wind turbine turns wind energy into electricity using the aerodynamic force from the rotor blades, which works like an airplane wing or helicopter rotor blade.

Today, various countries from various parts of the world are intensively developing renewable energy that utilizes wind resources to be converted into electrical energy through windmills.

The windmill itself is an instrument that harnesses the kinetic energy of the wind into mechanical energy, and finally converted into electrical energy by a generator. This utilization does not occur immediately, but goes through several stages before it finally becomes electrical energy. In addition, the wind speed must also be suitable and ideal, meaning not too slow and not too hard. The shape of the propellers on the windmill is indeed formed in such a way as to effectively capture the energy in the wind. Because as we already know, the source of windmill energy is the wind itself.

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Then, how does a wind turbine work?

Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. The wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity.

A wind turbine turns wind energy into electricity using the aerodynamic force from the rotor blades, which works like an airplane wing or helicopter rotor blade. When wind flows across the blade, the air pressure on one side of the blade decreases. The difference in air pressure across the two sides of the blade creates both lift and drag. The force of the lift is stronger than the drag and this causes the rotor to spin. The rotor connects to the generator, either directly (if it’s a direct drive turbine) or through a shaft and a series of gears (a gearbox) that speed up the rotation and allow for a physically smaller generator. This translation of aerodynamic force to rotation of a generator creates electricity.

Diagram of wind turbine components. Source: National Renewable Energy Laboratory, U.S. Department of Energy (public domain)

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Basically PLTB can be built in anywhere, where the wind blows hard. The advantage of PLTB is that it is a cheap source of generators, namely the wind, which is sure to always blow as long as the earth rotates. The use of wind, which is a renewable energy, does not leave hazardous toxic waste such as nuclear. Therefore, with the existence of wind turbines technology, it is hoped that it can assist in meeting a country’s electricity needs by using the utilization of natural resources, namely wind, in order to create an environmentally friendly world for mankind.

References:

[1] Wind Explained

[2] Kok Bisa Angin Jadi Listrik? Ini Cara Kerjanya

[3] How Do Wind Turbines Work?

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