Development details and performance assessment of a Wind Turbine Emulator

Castelló, J.; Espı́, J.M.; Garcı́a-Gil, R.

doi:10.1016/j.renene.2015.09.010

Cited by 65 publications

(28 citation statements)

References 19 publications

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“…These algorithms can be divided into two major groups: the indirect power controller (IPC) and the direct power controller (DPC). IPC includes algorithms such as tip speed ratio (TSR) [18], optimal torque (OT) [19], and power signal feedback control-based methods [20]. The IPC strategies control the output electrical power of WT by maximizing the mechanical power captured from the wind, whereas the DPC methods directly maximize the output electrical power.…”

Section: Introductionmentioning

confidence: 99%

An efficient variable-step P&O maximum power point tracking technique for grid-connected wind energy conversion system

et al. 2019

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This paper proposes an efficient modular sector variable-step perturb and observe (VSPO) maximum power point tracking algorithm. The proposed algorithm enhances the speed tracking and minimizes oscillations level problems associated with traditional P&O methods. The routine of generating the variable step sizes depends on splitting the (P-ω) characteristic curve of wind turbines into modular sectors, in which the perturbation step size for each sector is selected by comparing a suggested ratio with another specified ratio designed according to the required accuracy. By continuously observing the distance between the actual rotor speed and the optimal rotor speed, the VSPO technique applies variable perturbation step sizes according to the current operating sector. Moreover, a wind speed estimation technique is used as a replacement of distributed anemometers for tracking the optimal rotor speed at different wind speeds. The studied system configuration includes three-phase back-to-back converter which is used to connect a 1.5 MW permanent magnet synchronous generator into the utility grid. Furthermore, the model predictive control is used for current control loop in the machine-side converter. To demonstrate the performance of the proposed algorithm, its simulation results are compared with the simulation results of conventional P&O technique under step and random wind variations. In addition, the algorithm performance is studied with real wind data (Hokkaido Island, Japan) using MATLAB/SIMULINK environment. Simulation results show that the VSPO ensures the high tracking speed of maximum power point, while the steady-state oscillation is significantly reduced. The proposed algorithm enhances the system efficiency by 3.5% over the conventional one.

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Section: Introductionmentioning

confidence: 99%

An efficient variable-step P&O maximum power point tracking technique for grid-connected wind energy conversion system

et al. 2019

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“…Several implementations of wind emulators are detailed in References [11][12][13][14][15][16][17][18][19][20][21]. Wind emulators are classified mainly according to the type of electromechanical actuator used, or by the parameters considered for the implementation of the aerodynamic model.…”

Section: Introductionmentioning

confidence: 99%

“…Wind emulators are classified mainly according to the type of electromechanical actuator used, or by the parameters considered for the implementation of the aerodynamic model. DC motors can be used as electromechanical actuators [11][12][13][14][15] because of their easy torque control through the armature current. However, DC motors present some important drawbacks such as: considerable size-power ratio, high cost, the need for maintenance, etc.…”

Section: Introductionmentioning

confidence: 99%

Small Wind Turbine Emulator Based on Lambda-Cp Curves Obtained under Real Operating Conditions

et al. 2019

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This paper proposes a new on-site technique for the experimental characterization of small wind systems by emulating the behavior of a wind tunnel facility. Due to the high cost and complexity of these facilities, many manufacturers of small wind systems do not have a well knowledge of the characteristic λ - C p curve of their turbines. Therefore, power electronics converters connected to the wind generator are usually programmed with speed/power control curves that do not optimize the power generation. The characteristic λ - C p curves obtained through the proposed method will help manufacturers to obtain optimized speed/power control curves. In addition, a low cost small wind emulator has been designed. Programmed with the experimental λ - C p curve, it can validate, improve, and develop new control algorithms to maximize the energy generation. The emulator is completed with a new graphic user interface that monitors in real time both the value of the λ - C p coordinate and the operating point on the 3D working surface generated with the characteristic λ - C p curve obtained from the real small wind system. The proposed method has been applied to a small wind turbine commercial model. The experimental results demonstrate that the point of operation obtained with the emulator is always located on the 3D surface, at the same coordinates (rotor speed/wind speed/power) as the ones obtained experimentally, validating the designed emulator.

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“…Para desarrollar los convertidores electrónicos usados en el control de estas turbinas es necesario utilizar emuladores de las turbinas de viento (WTE, por sus siglas inglés) para emular su comportamiento en pruebas de laboratorios [7]. Con los WTE se pueden probar los diseños tanto de los convertidores como de los algoritmos que se encargan de realizar un seguimiento de la condición optima de la turbina ante distintas condiciones ambientales, también llamado búsqueda del máximo punto de potencia (MPPT, por sus siglas en inglés) [8,10].…”

Section: Introductionunclassified

Emulación de una turbina de viento con MPPT en tiempo real

Pelaez-Restrepo

Herrera

Montoya

et al. 2019

rev.ing.univ.Medellin

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En este trabajo se presenta el diseño e implementación de un banco de emulación de turbinas eólicas; el banco propuesto tiene en cuenta la dinámica de la extracción de energía efectiva del viento que se modela matemáticamente. El motor emula el movimiento giratorio debido a la energía del viento, lo cual genera perfiles de velocidad angular según el par medido por un sensor de par en el eje de acople entre el motor DC y el generador síncrono de imanes permanentes. Adicionalmente, se creó un experimento de prueba compuesto por un convertidor elevador controlado al cual se le aplica un algoritmo de extracción de máxima potencia, con el fin de validar el funcionamiento del banco motor DC y el generador síncrono de imanes permanentes al emular la dinámica de un generador eólico equivalente.

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Development details and performance assessment of a Wind Turbine Emulator

Cited by 65 publications

References 19 publications

An efficient variable-step P&O maximum power point tracking technique for grid-connected wind energy conversion system

An efficient variable-step P&O maximum power point tracking technique for grid-connected wind energy conversion system

Small Wind Turbine Emulator Based on Lambda-Cp Curves Obtained under Real Operating Conditions

Emulación de una turbina de viento con MPPT en tiempo real

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