Parameter varying control of wind turbine smart rotor for structural load mitigation

Ebrahimi, Majid; Shirazi, Farzad A.; Gharali, Kobra

doi:10.1016/j.ejcon.2022.100640

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…For the model presented in the previous section, the outputs of the system are the currents in the rotor on the axis d and on the axis 𝑞, that is, a system of two inputs and one output (23) and (24). The Figure 4 shows the behavior of the open-loop outputs before the inputs presented in the Figure 5.…”

Section: Resultsmentioning

confidence: 99%

Stability by assigning structures by applying the multivariable subspace identification algorithm for a wind system with a DFIG

2023

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In this paper, a controller for a doubly fed induction generator (DFIG) connected to a wind system is proposed. This control assigning its own structures as an optimal control method, the electric model in the DFIG state space is also shown, for which it is expected to estimate a linear model through the subspace technique and thus to design the controller. It will be possible to show that a structure assignment controller is undoubtedly a good option for the control of multivariable systems. The results of the output signals will be analyzed when applying the controller, assigning their own structures, which will allow us to observe that the response and disturbance times are below two tenths of a second.

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Section: Resultsmentioning

confidence: 99%

Stability by assigning structures by applying the multivariable subspace identification algorithm for a wind system with a DFIG

2023

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Mechanism of lightning damage to glass fiber composite wind turbine blades

Xie,

Jiang,

Jiang

2024

mat express

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Wind turbine blades (WTBs) are susceptible to lightning damage, resulting in significant costs for repair and replacement, which poses a considerable economic burden on wind farms. Therefore, this study investigates the mechanism of lightning damage of glass fiber composite (GFC)-WTBs to reduce the risk of such damage. The damage of GFC-WTBs caused by lightning strikes was analyzed using a numerical simulation method. The lightning pilot was simulated using high-voltage rod electrodes, and subsequently, the electric field strength and damage area on the blade surface under different conditions were measured. Additionally, a simulation model based on finite element analysis was developed to further predict and validate the experimental findings. The results reveal that the maximum electric field intensity was observed in the blade tip. Notably, the electric field intensity was found to be over 798,000 V/m when the rod electrode was positioned at a 0-degree angle with the blade tip. Further investigation revealed a non-linear and positive correlation between the damage area of GFC and lightning current amplitude, charge, and specific energy. In conclusion, the study provides a comprehensive examination of the relationship between lightning current and the damage to GFC-WTBs, as well as elucidates the mechanism of lightning damage to GFC-WTBs.

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Parameter varying control of wind turbine smart rotor for structural load mitigation

Cited by 2 publications

References 23 publications

Stability by assigning structures by applying the multivariable subspace identification algorithm for a wind system with a DFIG

Stability by assigning structures by applying the multivariable subspace identification algorithm for a wind system with a DFIG

Mechanism of lightning damage to glass fiber composite wind turbine blades

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