Fundamental aspects concerning wind power system operation. Part 1. Mathematical models

Babescu, Marius; Borlea, Ioan-Daniel; Jigoria-Oprea, Dan

doi:10.1109/melcon.2012.6196550

Cited by 12 publications

(5 citation statements)

References 3 publications

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“…The necessary data for the calculation of the equivalent power, for a given period of time, are speed measurements along with time recording of wind speed. By solving the equation of motion, when operating in an empty state: (1) the VUM values are obtained at moments of time t100, 200, ...., 1000 s. In operation these values of VUM, are measured at the respective moments of time. Thus, by solving equation ( 1), the function PECH(ω) is obtained, having the relation:…”

Section: Motivationmentioning

confidence: 99%

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Methods to improve wind turbine control

Dumitrescu

Dordescu²,

Drăgan³

2023

Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies XI

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Tracking the maximum power point (MPP) represents the essence of the variable speed control of wind turbines since it determines their efficiency. The MPP is achieved by always adapting the wind turbine’s speed to the wind speed. This paper presents a study of methods to improve the control of wind turbines. One of these methods is the minimization of the time interval required for the wind turbine to achieve maximum power. Minimizing the time it takes to bring the speed/VUM, ω, from GE to the optimum value, ωOPTIM, is made at the maximum value for GE current. The study is based on the wind speed measurements collected from a wind farm located in Dobrogea, Romania. In this paper we have studied the methods of optimizing the control of wind turbines with an emphasis on minimizing the time required to bring wind turbines in the optimal area, from an energy point of view knowing the wind speed and, based on this, the optimal mechanical angular velocity, charges the electric generator, (at the rated current value), if 𝜔⋗ 〖ω〗 _OPTIM, or discharges, (zero power), if 𝜔⋖ 〖ω〗 _OPTIM. This ensures maximum wind energy capture. The study is based on the wind speed measurements collected from a wind farm located in Dobrogea, Romania.

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Section: Motivationmentioning

confidence: 99%

“…At time variations of the wind speed, the problem of operation at the point of maximum power becomes more complex and becomes increasingly difficult to solve due to the large mechanical inertia and rapid variations of the wind speed. [1]…”

Section: Introductionmentioning

confidence: 99%

Methods to improve wind turbine control

Dumitrescu

Dordescu²,

Drăgan³

2023

Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies XI

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“…In the literature [1][2][3][4][5][6][7][8][9][10][11][12], the operation of the wind turbine (WT) in the maximum energy area is studied at a constant wind speed; using various mathematical models, data from the manufacturing company and/or obtained in laboratory conditions, which are quite different from those in real conditions operation [13][14][15]. For this reason, the electrical energy obtained is less than the maximum value that was obtained in a maximum power point (MPP) operation, at optimum mechanical angular velocity (MAV), ω OPTIM .…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Wind System Operation in the Optimal Energetic Area at Variable Wind Speed over Time

et al. 2019

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Due to high mechanical inertia and rapid variations in wind speed over time, at variable wind speeds, the problem of operation in the optimal energetic area becomes complex and in due time it is not always solvable. No work has been found that analyzes the energy-optimal operation of a wind system operating at variable wind speeds over time and that considers the variation of the wind speed over time. In this paper, we take into account the evolution of wind speed over time and its measurement with a low-power turbine, which operates with no load at the mechanical angular velocity ωMAX. The optimal velocity is calculated. The energy that is captured by the wind turbine significantly depends on the mechanical angular velocity. In order to perform a function in the maximum power point (MPP) power point area, the load on the electric generator is changed, and the optimum mechanical velocity is estimated, ωOPTIM, knowing that the ratio ωOPTIM/ωMAX does not depend on the time variation of the wind speed.

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“…At low power and for isolated zones, the w in electric accumulators is optimal solution [1][2][3][4][5][6]. If a fully controlled rectifier is solution, in energetic terms, can be obtaine load must be adapted to the variable wind this, the relationship between the optim mechanical angular speed (MAS) and measured with the anemometer (AN) is calc The main variables which can be measured are: -wind speed measured by the anemometer -mechanical angular velocity measured PMSG.…”

Section: Introductionmentioning

confidence: 99%