Improved framework for techno-economical optimization of wind energy production

Said, Mohamad Syazarudin Md; EL-Shimy, M.; Abdelraheem, M.A.

doi:10.1016/j.seta.2017.09.002

Cited by 11 publications

(5 citation statements)

References 24 publications

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“…In many studies [34,[36][37][38][39][40][41] the wind speed frequency is closely approximated by the Weibull distribution function:…”

Section: Wind Energy Modellingmentioning

confidence: 99%

Investigation of Sustainable Technology Options: Wind, Pumped-hydro-storage and Solar potential to Electrify Isolated Ziway Islanders in Ethiopia

Gizaw,

Bekele

2023

EAI Endorsed Trans Energy Web

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This research at supplying electricity to Ziway lake islanders in Ethiopia, through studying the wind, pumped hydro-storage (PHS), and solar energy potentials. A wind mast is erected, and measurements at 10,50, and 70m heights are taken for a year long. The wind is of class-4 with wind speeds of 7m/s at 50m, and 7.87m/s. The energy density is 318.8 kWh/m2 (50m). GIS-based 3D digital elevation model (DEM) is used to investigate the PHS, with the lake as lower-reservoir and a dried-out crater pond of an extinct volcano as upper reservoir. The head is extracted using optical remote sensing technology, DEM(LiDAR) 12.5m. Constraints considered are topography, area, head, and slope. Twelve upper reservoirs are identified within head range of 50-250,50-200, and 50-100m. The results showed a PHS capacity of 5976 KWh at head of 60m can be developed. The solar energy potential is 6.1KWh/m2 /day. The finding proved the viability of electricity supply to the community.

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“…In many studies [34,[36][37][38][39][40][41] the wind speed frequency is closely approximated by the Weibull distribution function:…”

Section: Wind Energy Modellingmentioning

confidence: 99%

Investigation of Sustainable Technology Options: Wind, Pumped-hydro-storage and Solar potential to Electrify Isolated Ziway Islanders in Ethiopia

Gizaw,

Bekele

2023

EAI Endorsed Trans Energy Web

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“…Many research have been done in this area but still there are notable aspects of view that could be considered experimentally and numerically [1][2][3][4][5]. A theoretical work was performed by Railbird and Lilley to obtain power outputs from a completely ducted land type wind turbine (sixty-five percent of the highest power outputs of the ideal bare wind turbine) [6].…”

Section: Literature Reviewmentioning

confidence: 99%

A CFD Study of a Flanged Shrouded Wind Turbine: Effects of Various Flange Surface Types on Output Power

Maftouni

Taghaddosi

2021

Scientia Iranica

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A CFD Study of a Flanged Shrouded Wind Turbine: Effects of Various Flange Surface Types on Output PowerThere is a global trend to optimize energy harvesting from all energy resources including renewable energy. In this study, the focus is on improving the surface of flanges in flanged shrouded wind turbines to obtain more efficient systems. A CFD approach is utilized for this purpose. All models are identical in the entrance diameter, exit diameter, length of the diffuser, and the height of the flange, but each model is of a different flange surface type. Different surfaces are studied, including a simple surface and some furrowed surfaces. The validation reports that there is a strong correlation between the present study's outcomes and that of previously experimental results. The results show that the models with furrowed surface flange type lead to an increase in the wind velocity when approaching the wind turbine blades. This leads to about 5-7% more output power. Also, the results indicate that the maximum velocity occurs at about 5cm after the shroud entrance. Consequently, it is suggested that the wind turbine should be installed at that location inside the shroud, to obtain the optimum energy harvest.

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“…Wind power has experienced rapid development during the past decades [1]. At the same time, it is an on‐going goal to reduce the levelized cost of energy (LCOE) of wind energy conversion system (WECS), especially in the context of parity feed‐in tariffs [2].…”

Section: Introductionmentioning

confidence: 99%

Bidirectional speed range extension of DFIG‐based WECS with dynamic minimum dc‐bus voltage

Jia

et al. 2021

IET Generation Trans & Dist

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Enlarging the speed range of wind turbines is an effective way to increase power production in low-frequency band wind which contains more energy and is very challenging for DFIG-based wind energy conversion system (WECS). The analysis shows that current controllability of the converter is the main factor limiting bidirectional speed range extension (BSRE). This problem can be solved by increasing dc-bus voltage, but a constant and high dc-bus voltage will increase the electrical stress and switching losses of the converter. This paper proposed a dynamic minimum dc-bus voltage (DMDCV) technique in which the dc-bus voltage can automatically adjust to enable the back-to-back voltage source converter to work in linear modulation mode at its minimum value, thus supporting BSRE while also achieving multiple goals including low electrical stress and low switching losses. Two implementation methods of DMDCV with and without modulation depth loop are proposed and discussed. The co-simulation results verified the feasibility of DMDCV and the advantages of BSRE in improving power generation.

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Improved framework for techno-economical optimization of wind energy production

Cited by 11 publications

References 24 publications

Investigation of Sustainable Technology Options: Wind, Pumped-hydro-storage and Solar potential to Electrify Isolated Ziway Islanders in Ethiopia

Investigation of Sustainable Technology Options: Wind, Pumped-hydro-storage and Solar potential to Electrify Isolated Ziway Islanders in Ethiopia

A CFD Study of a Flanged Shrouded Wind Turbine: Effects of Various Flange Surface Types on Output Power

Bidirectional speed range extension of DFIG‐based WECS with dynamic minimum dc‐bus voltage

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