Hi @minus-pi.

In this type of wind turbine, the wind enters into resonance as a result of an aerodynamic effect known as vortex shedding. This process means that when the wind passes through a certain blunt body, the air flow is modified and thus generates a cyclical pattern of vortices.

Therefore, electricity is generated by means of an alternator system, where coils and permanent magnets are integrated and connected to the dynamics of the equipment.
Thanks for your great contribution. Regards.