Optimum Blade Profiles for a Variable-Speed Wind Turbine in Low Wind Area

Thumthae, Chalothorn

doi:10.1016/j.egypro.2015.07.478

Cited by 18 publications

(12 citation statements)

References 3 publications

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“…In these works, while the focus of the research is on topology/shape optimisation of the blade, researchers have adopted different approaches in terms of the method of optimisation and the type of the blade. For example, recent publications [1][2][3][4][5][6][7][8][9][10][11][12][13] deal with conventional blades, papers [14 and 15] are about aerodynamic design optimisation of nonconventional blades, and the reported work [16] deals with the blades equipped with active flow controllers. In the structural design phase, the internal structure and the material of the blade are selected and designed.…”

Section: Introductionmentioning

confidence: 99%

“…Here, the fixed parameters are those which define the topology of the blade as well as the total 563 number of patches, the location of all patches with balanced layups, the layup configuration of all 564 balanced patches, and the stacking sequence and the total number of unidirectional layers in the 565 unbalanced patches (10)(11)(12)(13)(31)(32)(33)(34). Size of the unbalanced patches is to be determined through 566 optimisation.…”

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confidence: 99%

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Multiobjective optimisation and integrated design of wind turbine blades using WTBM-ANSYS for high fidelity structural analysis

Maheri

2020

Renewable Energy

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Multiobjective optimisation and integrated aerodynamic-structural design of wind turbine blades are emerging approaches, both requiring significant number of high fidelity analyses. Designer-in-theloop blade modelling and pre/ post-processing using specialised software is the bottleneck of high fidelity analysis and therefore a major obstacle in performing a robust optimisation, where thousands of high fidelity analyses are required to find the optimum solution. Removing this bottleneck is the driver for the development of WTBM, an automated wind turbine blade modeller. WTBM takes parameters defining the blade and its operating condition as inputs and generates preprocessor, solver and post-processor APDL files required by ANSYS for high fidelity analysis. The inputs can be generated automatically within an optimisation process, hence so can be the APDL files, allowing a fully automated optimisation in which any of the parameters which are required to define the size, topology, structure and material of a blade to be treated as a design variable. The solver parameters will be also updated automatically as necessary. The performance of WTBM-ANSYS in conducting hundreds of automated high fidelity analyses within an optimisation process is shown through multiobjective structural design and multiobjective integrated design case studies.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Multiobjective optimisation and integrated design of wind turbine blades using WTBM-ANSYS for high fidelity structural analysis

Maheri

2020

Renewable Energy

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“…The operation of wind turbines has already become economically viable in regions with low intensity winds, and the demand for this type of solution has grown worldwide [1,2]. The industry standardized topology employs the horizontal axis turbine [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Harnessing Wind Energy with Hydrostatic Transmission Coupled to an Electromagnetic Frequency Regulator

Asl¹,

Rf²,

Gi³

2020

Preprint

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This work presents an alternative to harnessing wind energy with an Electromagnetic Frequency Regulator (EFR) coupled to a hydrostatic transmission and associated with a horizontal axis wind turbine, a bidirectional frequency inverter and a secondary energy source, in a hybridized system. The hydrostatic transmision is composed by a fixed displacement axial piston pump and a variable displacement, swash plate, axial piston motor. Feedback linearization was used as a technique to control the motor geometric displacement, and a prediction algorithm for the steady state rotations of the armature and the electromagnetic field has been developed. A 5\,kW project was simulated on a Scilab platform, with combinations of constant or variable load, and constant or variable wind speed. The results indicated that the system was able to supply the generator load, adapting to fluctuations in wind speed. The possibility of storing wind energy through the inverter has also been proven. The system can accumulate energy in batteries during the fastest wind regimes, to use it when the turbine power is lower than the load.

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“…Chehouri et al [18] employed these algorithms and introduced the fundamental principles of wind turbine design to explain a classic multi-objective wind turbine optimization problem using a genetic algorithm. Thumthae [19] designed a variable speed Horizontal Axis Wind Turbine blade. To achieve a maximum energy output, chord lengths, blade twist angles, and rotational speeds were varied independently.…”

Section: Introductionmentioning

confidence: 99%

Small Wind Turbine Blade Design and Optimization

2019

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This work aims at designing and optimizing the performance of a small Horizontal-Axis-Wind-Turbine to obtain a power coefficient (C P ) higher than 40% at a low wind speed of 5 m/s. Two symmetric in shape airfoils were used to get the final optimized airfoil. The main objective is to optimize the blade parameters that influence the design of the blade since the small turbines are prone to show low performance due to the low Reynolds number as a result of the small size of the rotor and the low wind speed. Therefore, the optimization process will select different airfoils and extract their performance at the design conditions to find the best sections which form the optimal design of the blade. The sections of the blade in the final version mainly consist of two different sections belong to S1210 and S1223 airfoils. The optimization process goes further by investigating the performance of the final design, and it employs the blade element momentum theory to enhance the design. Finally, the rotor-design was obtained, which consists of three blades with a diameter of 4 m, a hub of 20 cm radius, a tip-speed ratio of 6.5 and can obtain about 650 W with a Power coefficient of 0.445 at a wind-speed of 5.5 m/s, reaching a power of 1.18 kW and a power coefficient of 0.40 at a wind-speed of 7 m/s.

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Optimum Blade Profiles for a Variable-Speed Wind Turbine in Low Wind Area

Cited by 18 publications

References 3 publications

Multiobjective optimisation and integrated design of wind turbine blades using WTBM-ANSYS for high fidelity structural analysis

Multiobjective optimisation and integrated design of wind turbine blades using WTBM-ANSYS for high fidelity structural analysis

Harnessing Wind Energy with Hydrostatic Transmission Coupled to an Electromagnetic Frequency Regulator

Small Wind Turbine Blade Design and Optimization

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