Design and analysis of a segmented blade for a 50 MW wind turbine rotor

2022 ◽  
pp. 0309524X2110693
Author(s):  
Alejandra S Escalera Mendoza ◽  
Shulong Yao ◽  
Mayank Chetan ◽  
Daniel Todd Griffith
Keyword(s):  
Wind Turbine ◽  
Large Mass ◽  
Turbine Rotor ◽  
Bolted Joints ◽  
Bonded Joints ◽  
Sheer Size ◽  
Extreme Scale ◽  
The Impact ◽  
Adhesive Materials ◽  
Wind Turbine Rotor

Extreme-size wind turbines face logistical challenges due to their sheer size. A solution, segmentation, is examined for an extreme-scale 50 MW wind turbine with 250 m blades using a systematic approach. Segmentation poses challenges regarding minimizing joint mass, transferring loads between segments and logistics. We investigate the feasibility of segmenting a 250 m blade by developing design methods and analyzing the impact of segmentation on the blade mass and blade frequencies. This investigation considers various variables such as joint types (bolted and bonded), adhesive materials, joint locations, number of joints and taper ratios (ply dropping). Segmentation increases blade mass by 4.1%–62% with bolted joints and by 0.4%–3.6% with bonded joints for taper ratios up to 1:10. Cases with large mass growth significantly reduce blade frequencies potentially challenging the control design. We show that segmentation of an extreme-scale blade is possible but mass reduction is necessary to improve its feasibility.

scholarly journals Evaluation of the impact of adjusting the angle of the axis of a wind turbine rotor relative to the flow of air stream on operating parameters of a wind turbine model

2017 ◽  
Vol 14 ◽  
pp. 01016
Author(s):  
Stanisław Gumuła ◽  
Małgorzata Piaskowska–Silarska ◽  
Krzysztof Pytel ◽  
Henryk Noga ◽  
Wojciech Kulinowski
Keyword(s):  
Wind Turbine ◽  
Turbine Rotor ◽  
Operating Parameters ◽  
Air Stream ◽  
The Impact ◽  
Turbine Model ◽  
Wind Turbine Rotor

scholarly journals Development of a Flexible Lightweight Hydraulic-Pneumatic Flywheel System for Wind Turbine Rotors

Fluids ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 162
Author(s):  
Laurence Alhrshy ◽  
Clemens Jauch ◽  
Peter Kloft
Keyword(s):  
Wind Turbine ◽  
Turbine Rotor ◽  
Rotor Blades ◽  
Test Results ◽  
Mechanical Loads ◽  
Conventional Steel ◽  
Simulation Results ◽  
The One ◽  
The Impact ◽  
Wind Turbine Rotor

In this paper, the design of a flexible piston accumulator for application in a hydraulic-pneumatic flywheel system in a wind turbine rotor is presented. The flywheel system enables a wind turbine to vary the inertia of its rotor blades to control the power output and, most importantly, to influence the vibratory behaviour of wind turbine components. The method used for designing the flexible accumulator is based on the one hand on test results of a flexible piston accumulator prototype, and on the other hand, on simulation results of a model of a flexible piston accumulator. As a result, a design of flexible piston accumulators for application in the flywheel system is implemented and compared with the design of conventional steel accumulators. Due to the proposed design of the flywheel system, the impact on the mechanical loads of a wind turbine is analysed. The simulation results show that the new design of the piston accumulators causes a lower impact on the mechanical loads of the wind turbine than a previously published design of piston accumulators. It is further shown that the considered wind turbine can take on the flywheel system without the need for reinforcements in the rotor blades.

scholarly journals Numerical investigation of the impact of wind turbine rotor on the passive cooler above nacelle

AIP Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 015248
Author(s):  
Hui Wen ◽  
Yang Shi ◽  
Lijian Wu ◽  
Liu Zhang
Keyword(s):  
Wind Turbine ◽  
Numerical Investigation ◽  
Turbine Rotor ◽  
The Impact ◽  
Wind Turbine Rotor

3D Woven Carbon/Glass Hybrid Spar Cap for Wind Turbine Rotor Blade

2006 ◽  
Vol 128 (4) ◽  
pp. 562-573 ◽  
Author(s):  
Mansour H. Mohamed ◽  
Kyle K. Wetzel
Keyword(s):  
Wind Turbine ◽  
Carbon Fibers ◽  
Rotor Blade ◽  
Turbine Rotor ◽  
Rotor Blades ◽  
Constant Thickness ◽  
Turbine Rotor Blade ◽  
Parametric Studies ◽  
The Impact ◽  
Wind Turbine Rotor

This paper presents the design and analysis for a spar cap for a wind turbine rotor blade. The cap is formed of an integral, unitary 3D woven material (3WEAVE®) having constant thickness; spar cap weight is varied and controlled by appropriately tapering the cap width from the blade root to tip. This analysis is employed for 24-m and 37-m rotor blades. These studies are conducted parametrically, examining a range of 3WEAVE® materials incorporating varying fractions of glass and carbon fibers, and hence exhibiting a range of structural properties and material costs. These parametric studies are used to determine the impact on blade weight and cost resulting from the various materials studied. Detailed results are presented in the form of tables to enable candidate materials to be evaluated as they are developed.

scholarly journals Hydraulic-pneumatic flywheel configurations for controlling the inertia of a wind turbine rotor

2018 ◽  
Vol 43 (2) ◽  
pp. 114-132 ◽  
Author(s):  
Sebastian Hippel ◽  
Clemens Jauch ◽  
Uwe Ritschel
Keyword(s):  
Power System ◽  
Wind Turbine ◽  
Rotor Blade ◽  
Total Mass ◽  
Turbine Rotor ◽  
Blade Design ◽  
Mechanical Loads ◽  
The Impact ◽  
System Inertia ◽  
Wind Turbine Rotor

In this article, a methodology is presented for the design of a hydraulic-pneumatic flywheel integrated in a wind turbine rotor. The flywheel enables wind turbines to contribute to power system inertia and it can be used for mitigating loads on the wind turbine. The methodology is applied to the geometry of an existing blade design of a 5-MW wind turbine, but is valid for any arbitrary rotor blade. Several flywheel configurations are derived causing an increase in rotor inertia of the 5-MW wind turbine by 15%, but differ in the position, dimensions and masses of the hydraulic components. These parameters determine the total mass of the hydraulic-pneumatic flywheel, and hence the impact on the mechanical loads on the wind turbine. As a result, a weight-optimized configuration for a flywheel integrated in a wind turbine rotor is derived.

Harmonization of new wind turbine rotor blades development process: A review

2014 ◽  
Vol 39 ◽  
pp. 874-882 ◽  
Author(s):  
B. Rašuo ◽  
M. Dinulović ◽  
A. Veg ◽  
A. Grbović ◽  
A. Bengin
Keyword(s):  
Wind Turbine ◽  
Development Process ◽  
Turbine Rotor ◽  
Rotor Blades ◽  
Wind Turbine Rotor
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