US 12,253,061 B2
Drive system for interior wind turbines of great heights and performance
Horst Bendix, Leipzig (DE)
Assigned to BEVENTUM GMBH, Leipzig (DE)
Appl. No. 17/757,739
Filed by BEVENTUM GMBH, Leipzig (DE)
PCT Filed Nov. 30, 2020, PCT No. PCT/EP2020/025547
§ 371(c)(1), (2) Date Oct. 25, 2022,
PCT Pub. No. WO2021/121650, PCT Pub. Date Jun. 24, 2021.
Claims priority of application No. 10 2019 008 854.9 (DE), filed on Dec. 19, 2019.
Prior Publication US 2023/0044349 A1, Feb. 9, 2023
Int. Cl. F03D 15/00 (2016.01); F03D 7/02 (2006.01); F03D 13/20 (2016.01); F03D 17/00 (2016.01)
CPC F03D 15/00 (2016.05) [F03D 7/0264 (2013.01); F03D 13/20 (2016.05); F03D 17/00 (2016.05)] 1 Claim
OG exemplary drawing
 
1. A drive system for an onshore wind power installation, composed of a rotatable tower having a rotor mounted at a hub height (NH) and a drive and generator platform disposed at a foot of the tower, wherein a flat belt is provided for transmitting a rotor torque, wherein
as a transmission element in one or multiple parts, the flat belt connected by loops, and by way of a large belt pulley at the hub height (NH), and by way of guide rollers on the path to a small belt pulley on the drive/generator platform, transmits and feeds the rotor torque singularly or while bifurcating through a drivetrain;
the flat belt, by way of incorporated steel wire ropes, comprises a high-tensile flat belt in double the length of the spacing of the upper belt pulley from the lower belt pulley;
the high-tensile flat belt by way of wire rope combinations and connections, while interacting with a material of a vulcanization, is suitable for forming a loop at any arbitrary location in the flat belt as well as at every location in the belt arrangement in the rotatable tower;
in addition to a permanent pre-tensioning of the flat belt from a floating dead weight of the drive/generator platform, an optimal position of pre-tensioning weights by means of a condition monitoring system (CMS) is provided for fine adjustment to currently prevailing wind conditions; and
an automatic belt monitor for permanently checking the integrity of the flat belts, said automatic belt monitor performing the immediate controlled shut-down of the drive system in the event of damage.