Performance Evaluation of Grid-Connected Wind Turbine Generators

Behabtu, Henok Ayele; Coosemans, Thierry; Berecibar, Maitane; Fante, Kinde Anlay; Kebede, Abraham Alem; Mierlo, Joeri Van; Messagie, Maarten

doi:10.3390/en14206807

Cited by 16 publications

(7 citation statements)

References 25 publications

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“…The wind turbine generator design process must always be performed with the machine's cooperation with the SWT rotor and the electric grid in mind. In [16], the authors performed numerical modelling of squirrel-cage and doubly-fed induction generators in wind turbines (albeit for 1.5 MW machines). Having studied a wide range of operating conditions, the authors noted the importance of ensuring proper cooperation of the generator and electric grid.…”

Section: Swt Electricity Generationmentioning

confidence: 99%

Selecting the Best Permanent Magnet Synchronous Machine Design for Use in a Small Wind Turbine

Lefik,

Firych-Nowacka,

Lipian

et al. 2024

Electronics

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The article describes the selection of a permanent magnet synchronous machine design that could be implemented in a small wind turbine designed by the GUST student organization together with researchers working at the Technical University of Lodz. Based on measurements of the characteristics of available machines, eight initial designs of machines with different rotor designs were proposed. The size of the stator, the number of pairs of poles, and the dimensions of the magnets were used as initial parameters of the designed machines. The analysis was carried out about the K-index, the so-called index of benefits. The idea was to make the selected design as efficient as possible while keeping production costs and manufacturing time low. This paper describes how to select the best design of a permanent magnet synchronous generator intended to work with a small wind turbine. All generator parameters were selected keeping in mind the competition requirements, as the designed generator will be used in the author’s wind turbine. Based on the determined characteristics of the generator variants and the value of the K-index, a generator with a latent magnet rotor was selected as the best solution. The aforementioned K-index is a proprietary concept developed for the selection of the most suitable generator design. This paper did not use optimization methods; the analysis was only supported by the K-index.

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Section: Swt Electricity Generationmentioning

confidence: 99%

Selecting the Best Permanent Magnet Synchronous Machine Design for Use in a Small Wind Turbine

Lefik,

Firych-Nowacka,

Lipian

et al. 2024

Electronics

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“…Recently, there has been a strong trend toward wind energy utilization either for grid connection or for household supply [1][2][3]. Hence, new wind generators of several MW have been developed and are currently being installed worldwide for use in high-power wind generation systems [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

Ghennam,

Belhadji,

Rizoug

et al. 2024

Energies

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Wind power systems, which are currently being constructed for the electricity worldwide market, are mostly based on Doubly Fed Induction Generators (DFIGs). To control such systems, multilevel converters are increasingly preferred due to the well-known benefits they provide. This paper deals with the control of a standalone DFIG-based Wind Energy Conversion System (WECS) by using a three-level Neutral-Point-Clamped (NPC) converter. The frequency and magnitude of the stator output voltage of the DFIG are controlled and fixed at nominal values despite the variable rotor speed, ensuring a continuous AC supply for three-phase loads. This task is achieved by controlling the DFIG rotor currents via a PI controller combined with a new Simplified Direct Space Vector Modulation strategy (SDSVM), which is applied to the three-level NPC converter. This strategy is based on the use of a line-to-line three-level converter space vector diagram without using Park transformation and then simplifying it to that of a two-level converter. The performance of the proposed SDSVM technique in terms of controlling the three-level NPC-converter-based standalone WECS is demonstrated through simulation results. The whole WECS control and the SDSVM strategy are implemented on a dSPACE DS 1104 board that drives a DFIG-based wind system test bench. The obtained experimental results confirm the validity and performance in terms of control.

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“…Variable-speed wind turbine generators (WTGs), such as the doubly fed induction generator (DFIG), are commonly employed in large-scale wind power plants (WPPs) [5].…”

Section: Introductionmentioning

confidence: 99%

“…Energies 2023, 16, 7637 2 of 37 Currently, DFIG wind turbines hold a significant share, accounting for 50% of the wind energy market due to their cost-effectiveness and compact size, making them a preferred choice [6]. DFIG wind turbines offer several advantages, including flexible active and reactive power control, lower converter costs compared to permanent magnet synchronous generators (PMSGs), reduced power losses, a lightweight design, and high efficiency [2,5].…”

Section: Introductionmentioning

confidence: 99%

Smoothing Intermittent Output Power in Grid-Connected Doubly Fed Induction Generator Wind Turbines with Li-Ion Batteries

Behabtu,

Vafaeipour,

Kebede

et al. 2023

Energies

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Wind energy is an increasingly important renewable resource in today’s global energy landscape. However, it faces challenges due to the unpredictable nature of wind speeds, resulting in intermittent power generation. This intermittency can disrupt power grid stability when integrating doubly fed induction generators (DFIGs). To address this challenge, we propose integrating a Li-ion battery energy storage system (BESS) with the direct current (DC) link of grid-connected DFIGs to mitigate power fluctuations caused by variable wind speed conditions. Our approach entails meticulous battery modeling, sizing, and control methods, all tailored to match the required output power of DFIG wind turbines. To demonstrate how well our Li-ion battery solution works, we have developed a MATLAB/Simulink R2022a version model. This model enables us to compare situations with and without the Li-ion battery in various operating conditions, including steady-state and dynamic transient scenarios. We also designed a buck–boost bidirectional DC-DC converter controlled by a proportional integral controller for battery charging and discharging. The battery actively monitors the DC-link voltage of the DFIG wind turbine and dynamically adjusts its stored energy in response to the voltage level. Thus, DFIG wind turbines consistently generate 1.5 MW of active power, operating with a highly efficient power factor of 1.0, indicating there is no reactive power produced. Our simulation results confirm that Li-ion batteries effectively mitigate power fluctuations in grid-connected DFIG wind turbines. As a result, Li-ion batteries enhance grid power stability and quality by absorbing or releasing power to compensate for variations in wind energy production.

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Performance Evaluation of Grid-Connected Wind Turbine Generators

Cited by 16 publications

References 25 publications

Selecting the Best Permanent Magnet Synchronous Machine Design for Use in a Small Wind Turbine

Selecting the Best Permanent Magnet Synchronous Machine Design for Use in a Small Wind Turbine

A Three-Level Neutral-Point-Clamped Converter Based Standalone Wind Energy Conversion System Controlled with a New Simplified Line-to-Line Space Vector Modulation

Smoothing Intermittent Output Power in Grid-Connected Doubly Fed Induction Generator Wind Turbines with Li-Ion Batteries

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