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Wind Turbines How Do They Work

How Do They Work?

Wind turbines generate electricity by harnessing the wind’s energy.

The movement of the wind over the turbine’s blades makes them turn, thus generating kinetic energy. The movement of the blades then turns a shaft in the nacelle.

The rotational energy of the shaft is then converted into electricity by a generator to which it is connected.

Depending on the design, the power output may then be converted from direct current (DC) to alternating current (AC) via an inverter.

Before the electricity can be exported to the local grid or used on site a final step is required. This involves converting the electricity to the correct voltage for the network (usually 11,000 V – 33,000 V). The energy of the wind can then be used.

 

Figure: Typical Components of a Gearbox-Type Wind Turbine

1. Hub 6. Gearbox 11. Yaw Motor
2. Hub Ring 7. Nacelle Cover
3. Main Bearing 8. High-Speed Shaft
4. Main Shaft 9. Generator
5. Silent Block 10. Nacelle Frame