Does wind power generate direct current or alternating current?

The old-fashioned wind power generation is direct current, which is converted into alternating current through an inverter. The new wind power generation is all AC based.

The working principle of wind turbines is relatively simple. The wind turbine rotates under the action of the wind, converting the kinetic energy of the wind into the mechanical energy of the wind turbine shaft. The generator rotates and generates electricity under the drive of the wind turbine shaft. Generally speaking, wind energy is also solar energy, so it can be said that wind turbines are a type of thermal energy utilization generator that uses the sun as a heat source and the atmosphere as a working medium.

Another type of large capacity generator uses automatic control of output power to control the speed of the generator. If the wind is strong and the speed needs to increase, the output power of the generator increases, making the speed of the generator basically stable. But if the wind speed is too low to reach the rated speed, the fan will naturally stop. So the annual operating hours of wind turbines can be between 2200-2400 hours, which is already very good.

Due to unstable air flow, the alternating current output of the wind turbine, which varies from 13 to 25V, must be rectified through a charger and then charged into a battery to convert the electrical energy generated by the wind turbine into chemical energy. Then use an inverter power supply with a protective circuit to convert the chemical energy in the battery into AC 220V mains power to ensure stable use.