Design of wind turbine blades with respect to stability
(2019) In TVSM-5000 VSMM01 20191Structural Mechanics
- Abstract
- In the 21st century, wind power has emerged as a strong candidate in fulfilling societies
goals of achieving carbon-free energy energy production. Windpower has evolved along
with other technological developments, giving rise to larger turbines, but with the overall
design trend remaining largely unchanged.
Winfoor, a Swedish company based in Lund,aims to break that trend. With their new Triblade
design, Winfoor hopes to change the way wind turbine blades. Here, the traditional single
airfoil is replaced by three smaller foils, utilizing a truss system to retain structural integrity. The truss-design also allows for a modular assembly, as opposed to the traditional design which is constructed as a single piece. This allows for a... (More) - In the 21st century, wind power has emerged as a strong candidate in fulfilling societies
goals of achieving carbon-free energy energy production. Windpower has evolved along
with other technological developments, giving rise to larger turbines, but with the overall
design trend remaining largely unchanged.
Winfoor, a Swedish company based in Lund,aims to break that trend. With their new Triblade
design, Winfoor hopes to change the way wind turbine blades. Here, the traditional single
airfoil is replaced by three smaller foils, utilizing a truss system to retain structural integrity. The truss-design also allows for a modular assembly, as opposed to the traditional design which is constructed as a single piece. This allows for a simpler production(construction), transport and erection process. The design also has the potential to be significantly lighter than its conventional counterparts.
This thesis studies the possibility of using steel as opposed to more conventional materials
such as carbon and glass fiber reinforced polymers. Specifically, the stability of the structure
with respect to global and local buckling is examined during hurricane-force winds, when
the wind turbine is not producing electricity.
Thepossibilityofimprovingstructuralstabilityusingcorrugatedbeamsisstudiedusingfinite
element software, where a combination of linear and non-linear procedures is used. The
impact of changes to the overall design, such as connection methods and distance between
the blades, is also studied.
The analysis consists of two parts; a linear buckling analysis of the structure, followed by a
general static analysis of the structure under load, where the calculated buckling modes are
applied as initial imperfections in order to capture any post-buckling behavior.
From this thesis it was concluded that corrugated beams significantly improve the stability
of the structure while also allowing for the use of steel, as opposed to more expensive
conventional materials. (Less) - Popular Abstract (Swedish)
- Vindkraftverk är ett av samhällets främsta verktyg för en miljövänlig energiproduktion.
Den konventionella designen av bladen är emellertid i stort sett oförändrad. Triblade är
ny typ av design som har potentialen att revolutionera marknaden. Genom att använda
en fackverksstruktur öppnar man för möjligheten att utforska andra materialval än de
konventionella kol- och glasfibermaterial som används idag. Genom att använda stål som
huvudmaterial i strukturen skulle kostnaderna kraftigt reduceras, men detta medför nya
utmaningar med avseende på vikt och stabilitet.
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9004474
- author
- Lindkvist, Oskar LU and Nicolausson, Victor
- supervisor
-
- Kent Persson LU
- organization
- alternative title
- Dimensionering av vindkraftverksblad med hänsyn till stabilitet
- course
- VSMM01 20191
- year
- 2019
- type
- H3 - Professional qualifications (4 Years - )
- subject
- keywords
- FEM, Buckling, Stability, Wind turbine blades, Steel.
- publication/series
- TVSM-5000
- report number
- TVSM-5141
- ISSN
- 0281-6679
- language
- English
- id
- 9004474
- alternative location
- http://www.byggmek.lth.se/english/publications/tvsm-5000-present-2014/
- date added to LUP
- 2020-02-27 08:47:45
- date last changed
- 2020-02-27 08:47:45
@misc{9004474,
abstract = {{In the 21st century, wind power has emerged as a strong candidate in fulfilling societies
goals of achieving carbon-free energy energy production. Windpower has evolved along
with other technological developments, giving rise to larger turbines, but with the overall
design trend remaining largely unchanged.
Winfoor, a Swedish company based in Lund,aims to break that trend. With their new Triblade
design, Winfoor hopes to change the way wind turbine blades. Here, the traditional single
airfoil is replaced by three smaller foils, utilizing a truss system to retain structural integrity. The truss-design also allows for a modular assembly, as opposed to the traditional design which is constructed as a single piece. This allows for a simpler production(construction), transport and erection process. The design also has the potential to be significantly lighter than its conventional counterparts.
This thesis studies the possibility of using steel as opposed to more conventional materials
such as carbon and glass fiber reinforced polymers. Specifically, the stability of the structure
with respect to global and local buckling is examined during hurricane-force winds, when
the wind turbine is not producing electricity.
Thepossibilityofimprovingstructuralstabilityusingcorrugatedbeamsisstudiedusingfinite
element software, where a combination of linear and non-linear procedures is used. The
impact of changes to the overall design, such as connection methods and distance between
the blades, is also studied.
The analysis consists of two parts; a linear buckling analysis of the structure, followed by a
general static analysis of the structure under load, where the calculated buckling modes are
applied as initial imperfections in order to capture any post-buckling behavior.
From this thesis it was concluded that corrugated beams significantly improve the stability
of the structure while also allowing for the use of steel, as opposed to more expensive
conventional materials.}},
author = {{Lindkvist, Oskar and Nicolausson, Victor}},
issn = {{0281-6679}},
language = {{eng}},
note = {{Student Paper}},
series = {{TVSM-5000}},
title = {{Design of wind turbine blades with respect to stability}},
year = {{2019}},
}