Tower construction of a wind turbine and method for stabilizing a tower construction of a wind turbine
US9617752B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 2013 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Sep 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/74
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tower structure for a wind power plant permits very high hub heights in a cooperation of internal prestress, guying, and a torsionally rigid tower shaft. The tower structure has a tower shaft, a foundation and a transition piece in a he region of an upper end of the tower shaft. Guy elements are inclined towards a longitudinal axis of the tower shaft, and extend radially outside an outer skin of the tower shaft. Tension members are radially inside the outer skin to prestress the tower shaft vertically at least in sections. The tower shaft is made of prestressed concrete in a region between the transition piece and the foundation. To control resonance behavior, prestressing and guy elements are acted upon with a variable tensile stress which varies and influences natural frequencies of the tower structure such that no interferences occur between excitation frequencies and the natural frequencies, and such that an aerodynamic absorption is also possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.