Vertical Profile of Wind Speed in the Atmospheric Boundary Layer and Assessment of Wind Resource on the Bobo Dioulasso Site in Burkina Faso

Boro, Drissa; Donnou, Hagninou Elagnon Venance; Kossi, Imbga; Bado, Nebon; Kieno, Florent P.; Bathiebo, J.

doi:10.4236/sgre.2019.1011016

Cited by 8 publications

(7 citation statements)

References 42 publications

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“…It is evaluated at 56 W.m Togo and Nigeria. The results obtained in the Ivory Coast more precisely in Korhogo in the northern savannah zone and reported by the studies of Boro et al [33] indicates that the highest monthly wind potential is recorded in May and estimated at 29.28 W.m -2 at 10 m. On the Bobo-Dioulasso site in Burkina Faso, the annual wind potential is estimated at 53.13 W.m -2 at 20 m and 84.05 W.m -2 at 50 m according to the studies of Boro et al [33]. Several sites in Chad have been the subject of the wind potential study [31].…”

Section: Variation Of the Wind Energysupporting

confidence: 75%

Vertical Extrapolation of Wind Speeds Under a Neutral Atmosphere and Evaluation of the Wind Energy Potential on Different Sites in Guinea

Mathos¹,

Donnou²,

Kouchade³

et al. 2020

AJEE

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This study has been focused on the vertical profile determination of the winds under a neutral atmosphere in order to assess of the wind power density at three sites in Guinea. The power law has been used as an extrapolation model for wind speed. The Weibull function has been used to estimate the wind power density. The satellite data at 10 m above the ground recorded during the period from January 2001 to December 2015 on the sites of Conakry, Mamou and N'zérékoré sites were used. The results indicate that the Conakry site is the windiest of the three study sites with an average speed estimated at 2.83 m.s-1 at 10 m and 4.23 m.s-1 at 100 m above the ground. The form parameter k of Weibull varies from 1 to 1.8 and the scale parameter c from 1.5 to 6 m.s-1 and are both increasing functions of altitude. Finally, the quantities of energy obtained at the three sites reveal that only the Conakry site could be suitable for the installation of small wind turbines for the wind energy production. The average annual density is estimated at 45.77 W.m-2 at 10 m; 85.62 W.m-2 at 50 m and 113.31 W.m-2 at 100 m. On the Mamou and N'zérékoré sites, the pumping water from multi-blade wind turbines could be considered.

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Section: Variation Of the Wind Energysupporting

confidence: 75%

Vertical Extrapolation of Wind Speeds Under a Neutral Atmosphere and Evaluation of the Wind Energy Potential on Different Sites in Guinea

Mathos¹,

Donnou²,

Kouchade³

et al. 2020

AJEE

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“…It should be noted that these convective movements, less intense than during the day, could therefore explain the instability observed at this time. This characterisation of the atmosphere in Conakry is confirmed by the studies of Donnou et al [3], Boro et al [58], Gualtieri et al [4], Yahaya et al [59] and Fritz et al [60] who also estimate that the atmosphere is generally unstable during the day and stable during the night.…”

Section: Fig 6 Monthly Variation Of Obukhov Length In Conakry (2001-2...supporting

confidence: 69%

“…During the period from November to mid-May (dry season), the production of wind energy is more important during the day than night. In sum, based on the wind power density classes used in the studies of Donnou et al [52] and Boro et al [58], the power densities calculated at the Conakry site belong to class 3 (300 W.m -2 ; 400 W.m -2…”

Section: Wind Energy Distributionmentioning

confidence: 99%

Characterisation of the Vertical Wind Profile According to the Stability Classes of the Atmosphere in Conakry, Guinea

Mathos

Donnou

Hounguè

et al. 2021

PSIJ

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The characteristics of the vertical wind profile and the wind potential study on the Conakry site for each atmospheric stability class were investigated in this study. Wind speed and air temperature data recorded over the period from January 2001 to December 2019 at 10 m and 50 m above the ground at daily (50 m) and hourly (10 m) scales were used. The wind shear parameters were determined from the logarithmic and power law. Based on the Newman and Klein wind shear model, a new formulation of this parameter was proposed as a function of the Obukhov length at order 2 and calibrated from the measurements using the simplex algorithm of Nelder and Mead. From the Weibull parameters obtained for the stable and unstable period of the atmosphere, the available wind potential at Conakry was estimated from 10 m to 80 m. The results indicate that the annual average of the ground roughness length is 1.7 x 10-2 m. The annual average of the ground friction velocity is 0.19 m.s-1. The atmosphere remains stable at the Conakry site from 09 p.m. to 10 a.m. and unstable from 10 a.m. to 09 p.m. The proposed wind shear formulation gives a better estimation of the wind speed in function of altitude with the lowest values of RMSE and MAE (4.5x10-4 ; 3.8x10-4) m.s-1 in stable and unstable periods (0.09 ; 0.07) m.s-1 compared to some models found in the literature. The mean annual wind shear coefficient in stable period is 0.26 and in unstable period 0.28. The annual mean shape parameter from 10 m to 80 m above ground in stable period is between 1.25 and 1.64, and during unstable period, it varies from 1.55 to 2.07. The annual mean scale parameter at 10 m and 80 m above ground is (3.9; 7.10) m.s-1 (unstable atmosphere) and (2.45; 4.41) m.s-1 when the atmosphere is stable. The annual average of the energy production under a convective atmosphere at 10 m and 80 m is estimated at 72 W.m-2 and 301 W.m-2 respectively. During the night cycle, this annual production varies from 28 W.m-2 (10 m) to 93 W.m-2 (80 m). Based on these results, the Conakry site is suitable to host medium-sized wind power plants for electricity and water production.

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“…where V(H) is the speed of the wind, H is the height, Y 0 is the roughness length, v 0 is the friction velocity, q is the Von Kaman constant, and ψ is the atmospheric stability function [2]. ψ value is greater than zero for the daytime and is less than zero in the night.…”

Section: Introductionmentioning

confidence: 99%

An Optimized Enhanced Phase Locked Loop Controller for a Hybrid System

et al. 2022

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The use of renewable energy sources is the need of the hour, but the highly intermittent nature of the wind and solar energies demands an efficient controller be connected with the system. This paper proposes an adept control algorithm for an isolated system connected with renewable energy sources. The system under consideration is a hybrid power system with a wind power harnessing unit associated with a solar energy module. A controller that works with enhanced phase locked loop (EPLL) algorithm is provided to maintain the quality of power at the load side and ensure that the source current is not affected during the load fluctuations. EPLL is very simple, precise, stable, and highly efficient in maintaining power quality. The double-frequency error which is the drawback of standard phase locked loop is eliminated in EPLL. Optimization techniques are used here to tune the values of the PI controller gains in the controlling algorithm. Tuning of the controller is an important process, as the gains of the controllers decide the quality of the output. The system is designed using MATLAB/SIMULINK. Codes are written in MATLAB for the optimization. Out of the three different optimization techniques applied, the salp swarm algorithm is found to give the most suitable gain values for the proposed system. Solar power generation is made more efficient by implementing maximum power point tracking. Perturb and observe is the method adopted for MPPT.

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Vertical Profile of Wind Speed in the Atmospheric Boundary Layer and Assessment of Wind Resource on the Bobo Dioulasso Site in Burkina Faso

Cited by 8 publications

References 42 publications

Vertical Extrapolation of Wind Speeds Under a Neutral Atmosphere and Evaluation of the Wind Energy Potential on Different Sites in Guinea

Vertical Extrapolation of Wind Speeds Under a Neutral Atmosphere and Evaluation of the Wind Energy Potential on Different Sites in Guinea

Characterisation of the Vertical Wind Profile According to the Stability Classes of the Atmosphere in Conakry, Guinea

An Optimized Enhanced Phase Locked Loop Controller for a Hybrid System

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