Aerodynamic Design of Wind Turbine Blades Utilising Nonconventional Control Systems PDF Download

Author: I Kade Wiratama
Publisher:
ISBN:
Category : Wind turbines
Languages : en
Pages : 0

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Author: Povl Brondsted
Publisher: Woodhead Publishing
ISBN: 0081030088
Category : Technology & Engineering
Languages : en
Pages : 516

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Book Description
Advances in Wind Turbine Blade Design and Materials, Second Edition, builds on the thorough review of the design and functionality of wind turbine rotor blades and the requirements and challenges for composite materials used in both current and future designs of wind turbine blades. Reviews the design and functionality of wind turbine rotor blades Examines the requirements and challenges for composite materials used in both current and future designs of wind turbine blades Provides an invaluable reference for researchers and innovators in the field of wind

Author: C. Bak
Publisher: Elsevier Inc. Chapters
ISBN: 0128089148
Category : Technology & Engineering
Languages : en
Pages : 58

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Book Description
This chapter describes the process of aerodynamic rotor design for horizontal axis wind turbines. Apart from describing the state-of-the-art, it presents the mathematical models used, explains how airfoil and rotor control choice are decided and lists common design constraints. An example is used to illustrate the rotor design process, covering all the main aspects from choice of rotor size, airfoil types and number of blades to the exact aerodynamic shape of the blades. At the end of the chapter there is a summary of future trends and sources of further information.

Author: Jin Chen
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110383748
Category : Science
Languages : en
Pages : 405

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Book Description
Wind Turbine Airfoils and Blades introduces new ideas in the design of wind turbine airfoils and blades based on functional integral theory and the finite element method, accompanied by results from wind tunnel testing. The authors also discuss the optimization of wind turbine blades as well as results from aerodynamic analysis. This book is suitable for researchers and engineers in aeronautics and can be used as a textbook for graduate students.

Author: Soumitr Dey
Publisher:
ISBN:
Category :
Languages : en
Pages : 170

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Book Description
The ever increasing need for energy and the depletion of non-renewable energy resources has led to more advancement in the "Green Energy" field, including wind energy. An improvement in performance of a Wind Turbine will enhance its economic viability, which can be achieved by better aerodynamic designs. In the present study, a design system that has been under development for gas turbine turbomachinery has been modified for designing wind turbine blades. This is a very different approach for wind turbine blade design, but will allow it to benefit from the features inherent in the geometry flexibility and broad design space of the presented system. It starts with key overall design parameters and a low-fidelity model that is used to create the initial geometry parameters. The low-fidelity system includes the axisymmetric solver with loss models, T-Axi (Turbomachinery-AXIsymmetric), MISES blade-to-blade solver and 2D wing analysis code XFLR5. The geometry parameters are used to define sections along the span of the blade and connected to the CAD model of the wind turbine blade through CAPRI (Computational Analysis PRogramming Interface), a CAD neutral API that facilitates the use of parametric geometry definition with CAD. Either the sections or the CAD geometry is then available for CFD and Finite Element Analysis. The GE 1.5sle MW wind turbine and NERL NASA Phase VI wind turbine have been used as test cases. Details of the design system application are described, and the resulting wind turbine geometry and conditions are compared to the published results of the GE and NREL wind turbines. A 2D wing analysis code XFLR5, is used for to compare results from 2D analysis to blade-to-blade analysis and the 3D CFD analysis. This kind of comparison concludes that, from hub to 25% of the span blade to blade effects or the cascade effect has to be considered, from 25% to 75%, the blade acts as a 2d wing and from 75% to the tip 3D and tip effects have to be taken into account for design considerations. In addition, the benefits of this approach for wind turbine design and future efforts are discussed.

Author: J. G.Holierhoek
Publisher: Elsevier Inc. Chapters
ISBN: 0128089164
Category : Technology & Engineering
Languages : en
Pages : 30

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Aeroelasticity concerns the interaction between aerodynamics, dynamics and elasticity. This interaction can result in negatively or badly damped wind turbine blade modes, which can have a significant effect on the turbine lifetime. The first aeroelastic problem that occurred on commercial wind turbines concerned a negatively damped edgewise mode. It is important to ensure that there is some out-of-plane deformation in this mode shape to prevent the instability. For larger turbine blades with lower torsional stiffness and the possibility of higher tip speeds for the offshore designs, classical flutter could also become relevant. When designing a wind turbine blade, it is therefore crucial that there is enough damping for the different modes and that there is no coincidence of natural frequencies with excitation frequencies (resonance). An effective aeroelastic analysis is also important, and the tools used for such an analysis must include the necessary detail in the structural model.

Author: Sugiman Sugiman
Publisher: Springer Nature
ISBN: 9464630787
Category : Technology & Engineering
Languages : en
Pages : 365

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Book Description
This is an open access book. The covid-19 pandemic today forces humans to do almost all activities from home. Consequently, inventions in many fields of engineering technology are needed to facilitate those activities. First, human activities mainly are based on information technology today and internet connection is very important. People generate, send, and receive data by their smartphones every time and everything is connected to the internet. Equipment becomes smarter to assist the owner. Second, People need powerful, efficient, and smart vehicles and machines in Industry 4.0. Third, the need for energy increases, which causes the decrease of global environmental quality. It needs new technology for saving energy by discovering new technologies in mechanical engineering. Fourth, many technologies emerge as disaster prevention by developing innovations in civil engineering and architecture. The Engineering Faculty of University of Mataram invites engineers and researchers around the world to visit Lombok island and to attend the valuable multi fields conference on science and engineering named “The First Mandalika International Multi-conference on Science and Engineering 2022′′ or “1st MIMSE 2022”. This fruitful event will be the annual conference in Lombok island which is supported by the West Nusa Tenggara Province government. Initially, the 1st MIMSE 2022 consisted of 5 engineering fields are Civil, Architecture, Electrical, Mechanical, and Informatics Engineering.

Author: Abdel Ghani Aissaoui
Publisher: BoD – Books on Demand
ISBN: 9535124951
Category : Technology & Engineering
Languages : en
Pages : 354

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Book Description
Renewable energies constitute excellent solutions to both the increase of energy consumption and environment problems. Among these energies, wind energy is very interesting. Wind energy is the subject of advanced research. In the development of wind turbine, the design of its different structures is very important. It will ensure: the robustness of the system, the energy efficiency, the optimal cost and the high reliability. The use of advanced control technology and new technology products allows bringing the wind energy conversion system in its optimal operating mode. Different strategies of control can be applied on generators, systems relating to blades, etc. in order to extract maximal power from the wind. The goal of this book is to present recent works on design, control and applications in wind energy conversion systems.

Author: Wai Hou (Alan) Lio
Publisher: Springer
ISBN: 3319755323
Category : Technology & Engineering
Languages : en
Pages : 193

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This thesis investigates the use of blade-pitch control and real-time wind measurements to reduce the structural loads on the rotors and blades of wind turbines. The first part of the thesis studies the main similarities between the various classes of current blade-pitch control strategies, which have to date remained overlooked by mainstream literature. It also investigates the feasibility of an estimator design that extracts the turbine tower motion signal from the blade load measurements. In turn, the second part of the thesis proposes a novel model predictive control layer in the control architecture that enables an existing controller to incorporate the upcoming wind information and constraint-handling features. This thesis provides essential clarifications of and systematic design guidelines for these topics, which can benefit the design of wind turbines and, it is hoped, inspire the development of more innovative mechanical load-reduction solutions in the field of wind energy.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Abstract : This study aims to design several types of aerodynamic control devices using smart material actuators to reduce the vibration fatigue load of wind turbine blades. The concepts of piezo stack actuator based smart external and internal flaps were detailed, including the basic flap layout, the operating range, the settings, etc. The concept of ionic polymer metal composite based microflap was also detailed. In order to compensate the aerodynamic force, centrifugal force and gravitational force acting on the flap under the wind turbine's normal operational conditions, the required energy output from the actuators was calculated. To meet the energy requirements, the configuration of actuator array was determined. Amplification systems were designed to enhance the displacement output at the expense of the force output. In addition, a universal flap control scheme was developed using the multiblade coordinate transformation, the gain scheduling technique and the proportional-integral-derivative controller. A series of aeroelastic-aerodynamic time marching simulations were performed on the NREL 5MW wind turbine with the designed flap systems and control scheme in order to obtain the time responses. The time domain data was analyzed from a fatigue perspective. The result shows there are significant reductions in the vibration fluctuation and the damage equivalent loads, with respect to the blade out-of-plane deflection and the blade root flapwise bending moment. To further investigate the effects of flap on the natural frequency of the wind turbine, the operational modal analysis was used to extract the modal parameters from the operating wind turbine. However, the operational modal analysis cannot be directly applied to the time series, which is because the assumptions are violated for the operating wind turbine and the harmonic frequencies raised from the rotational motion mask quantities of natural frequencies of the structural modes. In order to overcome this problem, a cepstral harmonic removal method was developed based on a mathematic development of a modified notch lifter. After the linearization direct eigenvalue analysis and the operational modal analysis were applied, both results show that the flap system slightly reduces the resonance frequencies.