Optimised layout for wind turbine rotor blades
US8678770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2008 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jan 20, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A wind turbine rotor blade defined by a tip point, a shoulder, a maximum chord interval which is defined as the radial interval over which the blade chord is no less that 95% of the shoulder chord and which extends over at least 15% of the entire blade length, and an outer blade interval extending from the maximum chord interval to the tip point, wherein the outer blade interval has a concave hyperbolic chord distribution from the maximum chord interval towards the tip point. Further a method for optimizing the chord distribution of a wind turbine blade layout is provided, wherein the chord distribution is optimized by optimizing the chord distribution in the maximum chord interval by maximizing the ratio of the annual energy production to the loads acting on the blade and in the outer blade interval with respect to the annual energy production alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.