Multi-Objective Control Design with Pole Placement Constraints for Wind Turbine System

Bakka, Tore; Karimi, Hamid Reza

doi:10.5772/46403

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…The linear parameter-varying (LPV) method is adopted to design the pitch controller, which has achieved satisfactory performance regarding power regulation [20]. A H 2 /H∞ control was designed in [21] with a disturbance suppression capability for semisubmersible FOWTs, which was supposed to suppress wind and wave disturbances, thereby reducing the fatigue load of the turbine structure while maximizing the ability of power regulation. It should be noted that the above-mentioned methods are all realised by blade pitch control, which will either cause heavier fatigue loads for blades with over-actuated pitch motion or lead to worsened power quality with the sacrifice of aerodynamic damping.…”

Section: Of 24mentioning

confidence: 99%

Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines

Zhou,

Zhang,

Chen

et al. 2024

JMSE

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Besides improving the generator torque and blade pitch controller, incorporating additional control actuations, such as a vibration absorber and active ballast, into the floating offshore wind turbine (FOWT) system is also promising for the motion mitigation of FOWTs. This work aims to study the catenary mooring length re-configuration effect on the dynamic behaviours of semi-submersible FOWTs. The mooring length re-configuration mentioned here is achieved by altering the mooring length with winches mounted on the floating platform, which is in a period of minutes to hours, so that the mooring tensions could be adjusted to reduce the aerodynamic load induced platform mean pitch. Control designs for both single mooring line and multiple mooring lines have been described and studied comparatively. In order to assess the motion mitigation performance of the proposed mooring line length re-configuration methods, fully coupled numerical simulations under different environmental cases have been conducted. Results indicate that the catenary mooring length re-configuration is able to reduce the platform pitch motion by up to 15.8% under rated condition, while careful attention must be paid to the scenarios where the catenary moorings become taut, which may lead to large load variations.

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Section: Of 24mentioning

confidence: 99%

Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines

Zhou,

Zhang,

Chen

et al. 2024

JMSE

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“…Robust control theory tackled the control problem of WECS due to its ability to deal with external disturbances and model uncertainties. Bakka and Karimi, [13], implemented a mixed H2-H∞ control design for the WECS, based on statefeedback control. They successfully regulated the rotor rotational speed subject to disturbances in the gearbox and wind turbine tower.…”

Section: Introductionmentioning

confidence: 99%

Linear Parameter Varying Power Regulation of Variable Speed Pitch Manipulated Wind Turbine in the Full Load Regime

Shaqarin

Al-Suod

2022

Wseas Transactions on Systems and Control

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In a wind energy conversion system (WECS), changing the pitch angle of the wind turbine blades is a typical practice to regulate the electrical power generation in the full-load regime. Due to the turbulent nature of the wind and the large variations of the mean wind speed during the day, the rotary elements of the WECS are subjected to significant mechanical stresses and fatigue, resulting in conceivably mechanical failures and higher maintenance costs. Consequently, it is imperative to design a control system capable of handling continuous wind changes. In this work, Linear Parameter Varying (LPV) H∞ controller is used to cope with wind variations and turbulent winds with a turbulence intensity greater than ± 10%. The proposed controller is designed to regulate the rotational rotor speed and generator torque, thus, regulating the output power via pitch angle manipulations. In addition, a PI-Fuzzy control system is designed to be compared with the proposed control system. The closed-loop simulations of both controllers established the robustness and stability of the suggested LPV controller under large wind velocity variations, with minute power fluctuations compared to the PI-Fuzzy controller. The results show that in the presence of turbulent wind speed variations, the proposed LPV controller achieves improved transient and steady-state performance along with reduced mechanical loads in the above-rated wind speed region.

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Further Results on Modeling, Analysis, and Control Synthesis for Offshore Wind Turbine Systems

Karimi

Bakka

2014

Advances in Industrial Control

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Multi-Objective Control Design with Pole Placement Constraints for Wind Turbine System

Cited by 3 publications

References 17 publications

Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines

Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines

Linear Parameter Varying Power Regulation of Variable Speed Pitch Manipulated Wind Turbine in the Full Load Regime

Further Results on Modeling, Analysis, and Control Synthesis for Offshore Wind Turbine Systems

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