Experimental and theoretical investigation of micro wind turbine for low wind speed regions

Akour, Salih N.; Al-Heymari, Mohammed; Ahmed, Talha; Khalil, Kamel Ali

doi:10.1016/j.renene.2017.09.076

Cited by 66 publications

(32 citation statements)

References 12 publications

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“…Another experimental study aimed at optimizing the blade geometry for average wind speed 5 m/s based on operational Reynolds number and utilized the blade geometry. The result of this study shows that the design achieved in the research is more cost-effective and more wind energy is harnessed using equivalent swept area [Akour et al 2018].…”

Section: Introductionmentioning

confidence: 77%

Experimental and Theoretical Study for Wind Energy Unit

Abusamaha

Dawoud²

2019

J. Ecol. Eng.

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The conversion process in the wind turbine, from mechanical (kinetic) energy to electrical energy, is affected by many factors that increase or decrease the useful output of the wind energy convertor. In this paper, three factors were studied experimentally on a Horizontal Axis Wind Energy Unit "EEEC" in laboratory-scale. The aim of this experiment was to study the influence of the number of blades, the angle of attack and the incident angle on the wind energy unit parameters to optimize its efficiency. For this purpose, the effect of the number of blades was studied firstly, in order to select the number of blades where the maximum inputs obtained at lab ambient temperature 25 °C and atmospheric pressure. Then, different readings of the incident angle and angle of attacks were taken. The data was analyzed using Microsoft Excel software. The results show that the maximum parameters of wind unite energy that produce the maximum efficiency, namely: voltage (volt), current (ampere) and rotational speed (rpm) are obtained when the number of blades is 4, the incident angle is 0° (when the rotor direction is with wind direction) and the angle of attack is 75°. Finally, these results were implemented in a simulation program (HOMER software) that uses this turbine in a resident along with storage to cover the needs of a selected house.

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Section: Introductionmentioning

confidence: 77%

Experimental and Theoretical Study for Wind Energy Unit

Abusamaha

Dawoud²

2019

J. Ecol. Eng.

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“…'Power3' which is tested during transit period of rainy season and winter noted as a substantially stable power output. We used wind rose [13,14] analysis for proposed study.…”

Section: Resultsmentioning

confidence: 99%

Development of MPPT Algorithm and Wind Rose Model for Wind Farm in Maharashtra

Jadhav¹,

Thosar²

2020

IJEAT

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 Abstract: This work focuses on enhancements of the maximum power point tracking for wind energy village. This work also targeted on numerous variables like air density, wind speed and impression of other geographical regions specific ecological elements. The Incremental Conductance along with Fractional open Circuit Voltage algorithms are usually is much less fruitful and still has problem in determining perfect step-size. To eliminate such drawbacks we recommended Hybrid execution of MPPT algorithms for maximum power point tracking to achieve the best possible power operation. The algorithms are presented by using Matlab simulation. This paper also delivers results for wind farm for various climate conditions in Maharashtra region with wind rose analysis. The outcomes attained are ideal for equivalent weather conditions based on air density variations and Hybrid Algorithm execution can be applied to draw out maximum power point. Results shows that recommended method is more efficient maximum power point tracking method with less execution time for any renewable energy resources.

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“…Under this low Re condition, improperly designed blade airfoils encounter deterioration in aerodynamic performance which adversely affects the operating efficiency of the wind turbine [18][19][20][21]. As such, airfoils designed for large-scale wind turbines are not necessarily suitable for small-scale wind turbines [19,20,22,23]. The airfoil aerodynamic parameters of interest in low wind speed airfoils are the lift-to-drag ratio (L/D), lift coefficient, stall angle, stall performance, and drag bucket performance [22,[24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

“…As such, airfoils designed for large-scale wind turbines are not necessarily suitable for small-scale wind turbines [19,20,22,23]. The airfoil aerodynamic parameters of interest in low wind speed airfoils are the lift-to-drag ratio (L/D), lift coefficient, stall angle, stall performance, and drag bucket performance [22,[24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Development of High Performance Airfoils for Application in Small Wind Turbine Power Generation

et al. 2020

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Small wind turbine power generation systems have the potential to meet the electricity demand of the residential sector in developing countries. However, due to their exposure to low Reynolds number (Re) flow conditions and associated problems, specific airfoils are required for the design of their blades. In this research, XFOIL was used to develop and test three high performance airfoils (EYO7-8, EYO8-8, and EYO9-8) for small wind turbine application. The airfoils were subsequently used in conjunction with Blade Element Momentum Theory to develop and test 3-bladed 6 m diameter wind turbine rotors. The aerodynamic performance parameters of the airfoils tested were lift, drag, lift-to-drag ratio, and stall angle. At Re = 300,000, EYO7-8, EYO8-8, and EYO9-8 had maximum lift-to-drag ratios of 134, 131, and 127, respectively, and maximum lift coefficients of 1.77, 1.81, and 1.81, respectively. The stall angles were 12°for EYO7-8, 14°for EYO8-8, and 15°for EYO9-8. Together, the new airfoils compared favourably with other existing low Re airfoils and are suitable for the design of small wind turbine blades. Analysis of the results showed that the performance improvement of the EYO-Series airfoils is as a result of the design optimization that employed an optimal thickness-to-camber ratio (t/c) in the range of 0.85-1.50. Preliminary wind turbine rotor analysis also showed that the EYO7-8, EYO8-8, and EYO9-8 rotors had maximum power coefficients of 0.371, 0.366, and 0.358, respectively.

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Experimental and theoretical investigation of micro wind turbine for low wind speed regions

Cited by 66 publications

References 12 publications

Experimental and Theoretical Study for Wind Energy Unit

Experimental and Theoretical Study for Wind Energy Unit

Development of MPPT Algorithm and Wind Rose Model for Wind Farm in Maharashtra

Development of High Performance Airfoils for Application in Small Wind Turbine Power Generation

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