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Zengguang Liu, Guolai Yang, Liejiang Wei, Daling Yue and Yanhua Tao
Energy storage plays a major role in solving the fluctuation and intermittence problem of wind and the effective use of wind power. The application of the hydraulic accumulator is the most efficient and convenient way to store wind energy in hydraulic wi...
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Roberto Luiz Ramos
This paper presents the design of a linear quadratic (LQ) optimal controller for a spar-type floating offshore wind turbine (FOWT). The FOWT is exposed to different sea states and constant wind turbulence intensity above rated wind speed. A new LQ contro...
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Roberto Luiz Ramos
This paper presents the design of a linear quadratic (LQ) optimal controller for a spar-type floating offshore wind turbine (FOWT). The FOWT is exposed to different sea states and constant wind turbulence intensity above rated wind speed. A new LQ contro...
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Roberto Luiz Ramos
This paper presents the design of a linear quadratic (LQ) optimal controller for a spar-type floating offshore wind turbine (FOWT). The FOWT is exposed to different sea states and constant wind turbulence intensity above rated wind speed. A new LQ contro...
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Pedro A. Galvani, Fei Sun and Kamran Turkoglu
The work presented in this paper has two major aspects: (i) investigation of a simple, yet efficient model of the NREL (National Renewable Energy Laboratory) 5-MW reference wind turbine; (ii) nonlinear control system development through a real-time nonli...
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Zili Zhang, Søren R. K. Nielsen, Frede Blaabjerg and Dao Zhou
Lateral tower vibrations of offshore wind turbines are normally lightly damped, and large amplitude vibrations induced by wind and wave loads in this direction may significantly shorten the fatigue life of the tower. This paper proposes the modeling and ...
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Mehdi Allagui, Othman B.k. Hasnaoui, Jamel Belhadj
This paper presents a comparative study on the most popular control strategies used to control high power, Direct Drive Wind Turbines. The studied wind turbine is equipped with a supervision scheme in order to fulfil Grid connection requirements (GCR). F...
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Sungsu Park and Yoonsu Nam
As the wind turbine size has been increasing and their mechanical components are built lighter, the reduction of the structural loads becomes a very important task of wind turbine control in addition to maximum wind power capture. In this paper, we prese...
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Asier Diaz de Corcuera, Aron Pujana-Arrese, Jose M. Ezquerra, Edurne Segurola and Joseba Landaluze
This article demonstrates a strategy to design multivariable and multi-objective controllers based on the H8 norm reduction applied to a wind turbine. The wind turbine model has been developed in the GH Bladed software and it is based on a 5 M...
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Xuguo Jiao, Guozhong Wang, Xin Wang, Zhenyong Zhang, Yanbing Tian and Xiwen Fan
Due to physical limitations and safety requirements, the rate and amplitude of change in wind turbines? pitch angle are limited, which will bring integral saturation problems to the control system. This leads to the deterioration of the pitch control sys...
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Mikel Serrano-Antoñanazas, Jesús-Enrique Sierra-Garcia, Matilde Santos and María Tomas-Rodríguez
Compared to onshore turbines, floating offshore wind turbines (FOWTs) take advantage of the increased availability of offshore wind while causing less environmental impact. However, the strong winds, waves, and currents to which they are subjected trigge...
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Jingfu Wang, Songtao Zhang, Jiahuan Cheng, Yunfei Li, Yan Shen and Zihao Wu
As an essential transportation equipment for personnel to access offshore wind plants, the safety and stability of the turbine access system (TAS) have gained increasing significance. However, when sea conditions deteriorate, the end of the TAS will expe...
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Xuan Bai, Hao Zhan and Baigang Mi
Flow separation occurs when wind turbines operate under large inflow conditions, which seriously affects the utilization of wind energy and reduces the output power of the blade. Therefore, a composite flow control configuration for horizontal axis wind ...
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Carlos Serrano, Jesus-Enrique Sierra-Garcia and Matilde Santos
Floating offshore wind turbines (FOWTs) are systems with complex and highly nonlinear dynamics; they are subjected to heavy loads, making control with classical strategies a challenge. In addition, they experience vibrations due to wind and waves. Furthe...
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Sung-ho Hur and Yiza-srikanth Reddy
The estimation of variables that are normally not measured or are unmeasurable could improve control and condition monitoring of wind turbines. A cost-effective estimation method that exploits machine learning is introduced in this paper. The proposed me...
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Shun Sang, Binhui Pei, Jiejie Huang, Lei Zhang and Xiaocen Xue
Voltage source (VS) control based on inertia synchronization is a novel phase lock loop (PLL)-less autonomous grid-synchronization control strategy suitable for the permanent magnet synchronous generator (PMSG)-based wind turbine. It can autonomously sen...
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Manuel Lara, Juan Garrido, Mario L. Ruz and Francisco Vázquez
This paper deals with the control problems of a wind turbine working in its nominal zone. In this region, the wind turbine speed is controlled by means of the pitch angle, which keeps the nominal power constant against wind fluctuations. The non-uniform ...
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Ernesto Chavero-Navarrete, Mario Trejo-Perea, Juan Carlos Jáuregui-Correa, Roberto Valentín Carrillo-Serrano, Guillermo Ronquillo-Lomeli and José Gabriel Ríos-Moreno
Bringing electricity to areas of difficult terrain is a complicated task, so it is convenient to generate power using local natural resources, such as wind, through a small horizontal-axis wind turbine (S-HAWT). However, at the rotor height of these wind...
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Po-Hung Yeh, Shao-Hua Chung and Bang-Fuh Chen
This study explores the damping effects of tuned liquid dampers (TLDs) on a monopile offshore wind turbine (OWT). The fluid?solid coupling of ANSYS was used to simulate the damping effect of a TLD on the structures. The environmental conditions refer to ...
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