Energy efficiency at wind power systems operating at time varying wind speed

Chioncel, Cristian Paul; Cristian, Murarescu; Spunei, Elisabeta; Dudu, Marius

doi:10.1109/iccsre.2019.8807676

Cited by 5 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of the optimum mechanical angular velocity, ω OPTIM , and the power at the electrical generator, P EG , depend on the value of the wind speed, v, which are generally [18][19][20][21][22] not well known. The maximum capture of wind energy can only be achieved with the correct mechanical angular velocity dependence on the wind speed [18][19][20]23,24]. As atmospheric conditions, mechanical stresses, and even turbine geometry change over time, the dependence of the mechanical angular velocity on the initially set wind speed changes over time and, therefore, requires recalculation based on the measurements [25].…”

Section: Introduction 1background Informationmentioning

confidence: 99%

Visualizing the Maximum Energy Zone of Wind Turbines Operating at Time-Varying Wind Speeds

Chioncel,

Spunei,

Tirian

2024

Sustainability

View full text Add to dashboard Cite

Wind turbines are one of the leading renewable sources of electricity. They are located in areas where the energy potential of the wind is high and more or less permanent. Their efficient operation depends on certain technical characteristics of the entire wind system (wind turbines, generator, automation system, regulation, and control). This paper analyses experimental data from wind turbines, WT, in the Dobrogea area: wind speed, v, velocity, n, and power, PEG, at the electric generator, EG. These are used to identify the local maxima of wind turbine power at different wind speeds. Based on this, a mathematical model for wind turbines and the power losses caused by inefficient control are determined. The mathematical model is used to visualize the maximum energy zones. At the end of this study, an algorithm is given that allows for the visualization of the optimal energy zone. The algorithm resulting from the analyzed case studies can be implemented by the control system in order to maximize the produced electricity with any variation in wind speed.

show abstract

Section: Introduction 1background Informationmentioning

confidence: 99%

Visualizing the Maximum Energy Zone of Wind Turbines Operating at Time-Varying Wind Speeds

Chioncel,

Spunei,

Tirian

2024

Sustainability

View full text Add to dashboard Cite

show abstract

Energy efficiency of wind power plants in various wind condition

Chioncel

Erdodi

Tirian

2021

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The present paper determines the optimum energy operation area of an electric wind power system, under time varying wind speed conditions. The determinations of the optimal area, from the energy point of view, is done based on experimental values from the Romanian black sea cost, Dobrogea area. The optimum operation area is defined by the optimal mechanical velocity, ωOPTIM. For this, the dependence between the wind speed, v, and ωOPTIM are computed based on the current wind speed and the current mechanical velocity ω. Due to the high inertia of the wind turbine (WT), the generators speed is not able to follow the changes of the wind speed. Knowing the optimum value ωOPTIM, the solution is to determine the load at the permanent magnet synchronous generator (PMSG) in order that the mechanical speed should timely reach his optimum.

show abstract