The principle of operation of wind power plants has made it possible to create household equipment that differs in the location of the turbine axis. Horizontal versions have different systems that control the rotors. With an azimuthal drive, the wind direction is detected electronically. Depending on the data received, the rotor turns away from the wind if its speed is higher than the nominal one.
If the control system is aeromechanical, the generator blades have special moving elements. It is this design solution that allows you to change the location of the blade plane depending on the wind direction. This ensures the most efficient operation of the equipment.
Wind generators characterized by a vertical axis are low-efficiency installations that are not recommended for use because of this. Such inefficient equipment includes:
“Darrieus” – a rotor that is suitable for use only as an anemoscope.
“Savonius is a rotor that has a disadvantage due to its existing advance coefficient. This equipment is not able to start up on its own, it needs to be spun up. If this is not done, it will only be possible to generate electricity when the wind reaches a speed of 10 m/s.
Wind turbines with a horizontal axis of rotation are the most widespread these days. This is due to the fact that in such installations it is easy to achieve a 30% utilization rate of wind flow energy. This value can be higher under certain conditions. With a vertical axis of rotation, this coefficient reaches 20% at best. Consequently, wind energy is used inefficiently.
If we compare the power supply from a wind turbine and solar modules, they are identical in terms of the connection scheme for a particular construction project. Therefore, one such power supply system can include both generators. This will allow you to get the maximum amount of electricity from alternative sources.