Do wind turbines emit alternating current or direct current?

Introduction Does the wind turbine emit alternating current or direct current? The wind turbine emits alternating current. The working principle of the wind turbine is relatively simple. The wind wheel rotates under the action of wind.

Do wind turbines emit alternating current or direct current?

Wind turbines generate alternating current. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the influence of wind. It converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates driven by the wind rotor shaft to generate electricity. Broadly speaking, wind energy is also solar energy, so it can also be said that a wind turbine is a thermal energy utilization generator that uses the sun as the heat source and the atmosphere as the working medium.

Due to the unstable air volume, the wind turbine outputs alternating current of 13 to 25V, which must be rectified by the charger, and then the battery is charged, so that the electrical energy generated by the wind turbine is converted into chemical energy. . Then use an inverter power supply with a protection circuit to convert the chemical energy in the battery into AC 220V mains power to ensure stable use.

Extended information

Although there are many types of wind turbines, they can be summarized into two categories:

1. Horizontal Axis wind turbines

Horizontal axis wind turbines can be divided into lift type and drag type. Lift-type wind turbines rotate quickly, while drag-type wind turbines rotate slowly. For wind power generation, lift-type horizontal axis wind turbines are mostly used.

Most horizontal axis wind turbines have wind-facing devices that can rotate as the wind direction changes. For small wind turbines, this wind-facing device uses a tail rudder, while for large wind turbines, a transmission mechanism composed of wind direction sensing elements and servo motors is used.

2. Vertical axis wind turbine

Vertical axis wind turbine does not need to face the wind when the wind direction changes, which is a major advantage over horizontal axis wind turbine in this regard , which not only simplifies the structural design, but also reduces the gyroscopic force of the wind wheel against the wind.

Baidu Encyclopedia-Wind Turbine

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