Wind energy conversion. Volume V. Experimental investigation of a horizontal axis wind turbine

In the present work, the study and design of a horizontal axis wind turbine suitable for the Cotonou site were investigated on the coast of Benin. A statistical study using the Weibull distribution was carried out on the hourly wind data measured at 10 m from the ground by the Agency for Air Navigation Safety in Africa and Madagascar (ASECNA) over the period from January 1981 to December 2014. Then, the models, techniques, tools and approaches used to design horizontal axis wind turbines were presented and the wind turbine components characteristics were determined. The numerical design and assembly of these components were carried out using SolidWorks software. The results revealed that the designed wind turbine has a power of 571W. It is equipped with a permanent magnet synchronous generator and has three aluminum blades with NACA 4412 biconvex asymmetrical profile. The values obtained for the optimum coefficient of lift and drag are estimated at 1.196 and 0.0189 respectively. The blades are characterised by an attack optimum angle estimated at 6° and the wedge angle at 5°. Their length is 2.50 m and the maximum thickness is estimated at 0.032 m for a rope length of 0.27 m. The wind turbine efficiency is 44%. The computer program designed on SolidWorks gives three-dimensional views of the geometrical shape of the wind turbine components and their assembly has allowed to visualize the compact shape of the wind turbine after export via its graphical interface. The energy quantity that can be obtained from the wind turbine was estimated at 2712,718 kWh/year. This wind turbine design study is the first of its kind for the study area. In order to reduce the technological dependence and the import of wind energy systems, the results of this study could be used to produce lower cost wind energy available on our study site.

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Numerical investigation of stall characteristics for winglet blade of a horizontal axis wind turbine

E3S Web of Conferences ◽

10.1051/e3sconf/202132103004 ◽

2021 ◽

Vol 321 ◽

pp. 03004

Author(s):

Shalini Verma ◽

Akshoy Ranjan Paul ◽

Anuj Jain ◽

Firoz Alam

Keyword(s):

Wind Energy ◽

Wind Turbine ◽

Numerical Investigation ◽

Turbulence Intensity ◽

Geometric Modeling ◽

Cfd Simulation ◽

Lift Coefficient ◽

Horizontal Axis ◽

Renewable Energy Resources ◽

Horizontal Axis Wind Turbine

Wind energy is one of the renewable energy resources which is clean and sustainable energy and the wind turbine is used for harnessing energy from the wind. The blades are the key components of a wind turbine to convert wind energy into rotational energy. Recently, wingtip devices are used in the blades of horizontal axis wind turbine (HAWT), which decreases the vortex and drag, while increases the lift and thereby improve the performance of the turbine. In the present study, a winglet is used at the tip of an NREL phase VI wind turbine blade. Solidworks, Pointwise, and Ansys-Fluent are used for geometric modeling, computational grid generation, and CFD simulation, respectively. The computational result obtained using SST k-ω turbulence modeling is well validated with the experimental data of NREL at 5 and 7 m/s of wind speeds. Numerical investigation of stall characteristics is carried out for wingleted blade at higher turbulence intensity (21% and 25%) and angle of attack (00 to 300 at 50 intervals) at 7 m/s wind speed. The result found that wingletd blade delay stall to 150 for both the cases of turbulence intensity. Increasing the turbulence intensity increases the lift coefficient at stall angle but drag coefficient also increases and thus a lower aerodynamic performance (CL/CD ratio = 13) is obtained. Wingleted blade improves the performance as the intensity of vortices is smaller compared to baseline blade

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Analyzing the static and dynamic characteristics of wind energy conversion system using wind turbine simulator

2017 IEEE Conference on Energy Conversion (CENCON) ◽

10.1109/cencon.2017.8262470 ◽

2017 ◽

Cited By ~ 1

Author(s):

M. A. Bhayo ◽

M. J. A. Aziz ◽

A. H. M. Yatim ◽

N. R. N. Idris

Keyword(s):

Wind Energy ◽

Energy Conversion ◽

Wind Turbine ◽

Dynamic Characteristics ◽

Wind Energy Conversion System ◽

Static And Dynamic Characteristics ◽

Wind Energy Conversion ◽

Conversion System ◽

Energy Conversion System

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Wind Energy Harvesting Capability of a Novel Cascaded Dual-Rotor Horizontal-Axis Wind Turbine

10.1109/iceccme52200.2021.9590963 ◽

2021 ◽

Author(s):

Michael S. Davis ◽

A. Jafarian ◽

F Ferdowsi ◽

Mohammad R. Madani

Keyword(s):

Energy Harvesting ◽

Wind Energy ◽

Wind Turbine ◽

Horizontal Axis ◽

Horizontal Axis Wind Turbine

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A Controller for Optimum Electrical Power Extraction from a Small Grid-Interconnected Wind Turbine

Energies ◽

10.3390/en13215809 ◽

2020 ◽

Vol 13 (21) ◽

pp. 5809

Author(s):

Tania García-Sánchez ◽

Arbinda Kumar Mishra ◽

Elías Hurtado-Pérez ◽

Rubén Puché-Panadero ◽

Ana Fernández-Guillamón

Keyword(s):

Wind Speed ◽

Wind Energy ◽

Energy Conversion ◽

Wind Turbine ◽

Wind Power ◽

Maximum Power ◽

Wind Energy Conversion System ◽

Wind Energy Conversion ◽

Conversion System ◽

Energy Conversion System

Currently, wind power is the fastest-growing means of electricity generation in the world. To obtain the maximum efficiency from the wind energy conversion system, it is important that the control strategy design is carried out in the best possible way. In fact, besides regulating the frequency and output voltage of the electrical signal, these strategies should also extract energy from wind power at the maximum level of efficiency. With advances in micro-controllers and electronic components, the design and implementation of efficient controllers are steadily improving. This paper presents a maximum power point tracking controller scheme for a small wind energy conversion system with a variable speed permanent magnet synchronous generator. With the controller, the system extracts optimum possible power from the wind speed reaching the wind turbine and feeds it to the grid at constant voltage and frequency based on the AC–DC–AC conversion system. A MATLAB/SimPowerSystems environment was used to carry out the simulations of the system. Simulation results were analyzed under variable wind speed and load conditions, exhibiting the performance of the proposed controller. It was observed that the controllers can extract maximum power and regulate the voltage and frequency under such variable conditions. Extensive results are included in the paper.

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Modelling and Control of the Hydraulically Actuated Horizontal Axis Wind Turbine Pitch System

Volume 2: Combustion, Fuels, and Emissions; Renewable Energy: Solar and Wind; Inlets and Exhausts; Emerging Technologies: Hybrid Electric Propulsion and Alternate Power Generation; GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery ◽

10.1115/gtindia2019-2378 ◽

2019 ◽

Author(s):

P. Venkaiah ◽

B. K. Sarkar

Keyword(s):

Renewable Energy ◽

Wind Energy ◽

Wind Turbine ◽

Wind Power ◽

Pid Controller ◽

Renewable Energy Sources ◽

Horizontal Axis ◽

Energy Sources ◽

Horizontal Axis Wind Turbine ◽

The World

Abstract The advantages of renewable energy sources are available freely in nature, inexhaustible, produce either no or little pollution and low gestation period. Among all renewable energy sources, wind energy has become one of the leading resources for power production in the world as well as in the India. According to WWEA, the wind turbine installation capacity in the world has been reached over 539.291GW by the end of 2017. The entire wind power installed capacity by the end of 2017 covers more than 5% of global demand of electricity. In India, the present wind power installation capacity on October, 2017 was over 32.7GW and wind energy contribution is 55% of the total renewable energy capacity in the country. Inspite of having sharp growth rate in wind in India, only a fraction of wind energy has been tapped until now out of 302 GW wind potential which is available above 100 m height on shore. Practical horizontal axis wind turbine converts kinetic energy in the wind into useful energy by using airfoil blades. Blade element momentum (BEM) theory becomes very popular due to its simplicity in mathematical calculation as well as accuracy. Hydraulic pitch actuation system has certain advantages due to its versatility, ability to produce constant force and torque irrespective of the disturbances outside of the system, ease and accuracy of control, simplicity, safety and economy. In the present study a semi rotary actuator has been utilized for turbine pitch actuation. In order to extract maximum power from available wind, fractional order PID controller (FOPID) has been developed for pitch control of wind turbine rotor blade. The performances of PID as well as FOPID controller have been compared with available wind data. The performance of FOPID controller was satisfactory compare to PID controller.

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