Abstract: The invention relates to a drive system for interior wind turbines, consisting of a rotatable tower (5) with a rotor mounted at hub height, the generator (16) being located at the foot of the tower (5) on a drive/generator platform (13) and the rotor torque being transferred from above downwards to the generator (16). Particular requirements are placed on such a drive system as the height of the interior wind turbine increases. A steel-wire-cable-reinforced flat belt (18) is used as a transfer element, the ends of which are joined in a particular way to form an endless belt the pretensioning of which is regulated dependent on the properties of the wind, and automatic monitoring is provided which executes an immediate controlled shut-down of the drive system if damage occurs.

Abstract: The invention relates to a drive system for interior wind turbines, consisting of a rotatable tower (5) with a rotor mounted at hub height, the generator (16) being located at the foot of the tower (5) on a drive/generator platform (13) and the rotor torque being transferred from above downwards to the generator (16). Particular requirements are placed on such a drive system as the height of the interior wind turbine increases. A steel-wire-cable-reinforced flat belt (18) is used as a transfer element, the ends of which are joined in a particular way to form an endless belt the pretensioning of which is regulated dependent on the properties of the wind, and automatic monitoring is provided which executes an immediate controlled shut-down of the drive system if damage occurs.