scholarly journals Publisher's Note: “Aerodynamic optimal blade design and performance analysis of 3 MW wind turbine blade with AEP enhancement for low-wind-speed-sites” [J. Renewable Sustainable Energy 8, 063303 (2016)]

2016 ◽  
Vol 8 (6) ◽  
pp. 069902
Author(s):  
Jinsuk Lee ◽  
Kangsu Lee ◽  
Bumsuk Kim
Keyword(s):  
Wind Speed ◽  
Performance Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Sustainable Energy ◽  
Wind Turbine Blade ◽  
Blade Design ◽  
Low Wind Speed ◽  
And Performance

scholarly journals Modal Analysis of Vertical Wind Turbine Blade

2018 ◽  
Vol 217 ◽  
pp. 01003 ◽  
Author(s):  
Lee Zhou Yi ◽  
Choe-Yung Teoh
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Modal Analysis ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Flow Induced Vibration ◽  
Low Wind Speed ◽  
Teak Wood ◽  
Blade Failure ◽  
Wind Induced Vibration

Wind turbines cannot simply be installed in Malaysia due to low wind speed condition. the project has analyzed the existing wind turbine blade (Aeolos-V 1k) design based on modal properties using computational approach (ANSYS Workbench) and redesign it. the modal analysis is simulated to observe natural frequency and corresponding mode shaped of the system under free vibration. the flow induced vibration can cause blade failure due to resonance or fatigue. Fluid Structural Interaction (FSI) ANSYS is used to the determined the interaction between the wind flow and the blade. Harmonic Response ANSYS is used to analyze the frequency response of the blade under wind induced vibration. After modification, the first mode has increased from 91.42 Hz to 102.12, since it is more than 50.92 Hz (Turbine maximum operating frequency), resonance would not occur during operating condition. the Aeolos-V’s blade has been modified by using. teak wood material and. redesign the blade for weight. reduction and aim for lower blade cost. the weight of modified blade has reduced 72.8 % after using teak wood and the efficiency of the wind turbine also increased. Modified design has been tested under Malaysia maximum wind speed of 9.44 m/s, the yield stress of teak wood (10.3 MPa) is higher than the maximum stress (4.2 MPa) obtained under force vibration which gives safety factor of 2.4. Hence, modified blade is reliable, efficient and more economic for Malaysia.

scholarly journals Airfoil types effect on geometry and performance of a small-scale wind turbine blade design

2020 ◽  
Vol 18 (1) ◽  
pp. 132-139
Author(s):  
Sigit Iswahyudi ◽  
S Sutrisno ◽  
P Prajitno ◽  
Setyawan Wibowo
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Small Scale ◽  
Blade Design ◽  
And Performance ◽  
Turbine Blade Design

Fatigue Analysis of an Innovative Extensible Wind Turbine Blade

2016 ◽  
Author(s):  
Jiale Li ◽  
Xiong (Bill) Yu
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Fatigue Damage ◽  
Wind Turbine Blade ◽  
Time Interval ◽  
Data Set ◽  
Low Wind Speed ◽  
Wind Turbine Tower ◽  
Utility Scale

This paper describes the feasibility analyses of an innovative, extensible ‘smart’ blade technology aims to significantly improve the wind turbine energy production. This innovative ‘smart’ blade will be extended at low wind speed to harvest more wind energy. It will be retracted to its original shape above rated wind speed, to protect the blade from possible damages under high wind speed. The extended blade, however, will inevitably increase the fatigue damage of the wind turbine blade of which fatigue demand, which often controls the design requirement of wind turbine blade. A rain-flow counting method is used for calculating stress range cycles during turbine blade operation. The analyzes model in the research is built based on a 100 kW utility-scale wind turbine installed on the campus of Case Western Reserve University with a data acquisition system installed on the wind turbine tower to monitor the operation data continuously over the years. In this analyses, the data set consists of four years’ wind speed data at 10-minutes time interval and blade rotational speed from March 2014 to February 2015 have been used. The results show that the fatigue damage of this extensible blade increased is acceptable considering its increased power output.

scholarly journals Blade Design Optimisation for Fixed-Pitch Fixed-Speed Wind Turbines

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Lin Wang ◽  
Xinzi Tang ◽  
Xiongwei Liu
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbines ◽  
Wind Turbine Blade ◽  
Design Parameters ◽  
Blade Design ◽  
Small Wind Turbines ◽  
Turbine Blade Design ◽  
Fixed Pitch

Fixed-pitch fixed-speed (FPFS) wind turbines have some distinct advantages over other topologies for small wind turbines, particularly for low wind speed sites. The blade design of FPFS wind turbines is fundamentally different to fixed-pitch variable-speed wind turbine blade design. Theoretically, it is difficult to obtain a global mathematical solution for the blade design optimisation. Through case studies of a given baseline wind turbine and its blade airfoil, this paper aims to demonstrate a practical method for optimum blade design of FPFS small wind turbines. The optimum blade design is based on the aerodynamic characteristics of the airfoil, that is, the lift and drag coefficients, and the annual mean wind speed. The design parameters for the blade optimisation include design wind speed, design tip speed ratio, and design attack angle. A series of design case studies using various design parameters are investigated for the wind turbine blade design. The design outcomes are analyzed and compared to each other against power performance of the rotor and annual energy production. The design outcomes from the limited design cases demonstrate clearly which blade design provides the best performance. This approach can be used for any practice of FPFS wind turbine blade design and refurbishment.

Aerodynamic design and performance analysis of multi-MW class wind turbine blade

2011 ◽  
Vol 25 (8) ◽  
pp. 1995-2002 ◽  
Author(s):  
Bumsuk Kim ◽  
Woojune Kim ◽  
Sungyoul Bae ◽  
Jaehyung Park ◽  
Manneung Kim
Keyword(s):  
Performance Analysis ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Aerodynamic Design ◽  
And Performance

scholarly journals Wind Turbine Blade Design Review

2012 ◽  
Vol 36 (4) ◽  
pp. 365-388 ◽  
Author(s):  
P.J. Schubel ◽  
R.J. Crossley
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Wind Turbine Blade ◽  
Blade Design ◽  
Design Review ◽  
Turbine Blade Design
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