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Low voltage ride through of doubly-fed induction generator connected to the grid using sliding mode control strategy

Saad, Naggar H.; Sattar, Ahmed A.; Mansour, Abd El-Aziz M. - In: Renewable Energy 80 (2015) C, pp. 583-594

Wind Energy Conversion System (WECS) based on Doubly Fed Induction Generator (DFIG) connected to the grid is subjected to high transient currents at rotor side and rise in DC-link voltage during voltage sag at stator/grid side. To secure power system operation wind turbines have to meet grid...

Persistent link: https://www.econbiz.de/10011263811

Vehicle hybridization with fuel cell, supercapacitors and batteries by sliding mode control

Ayad, M.Y.; Becherif, M.; Henni, A. - In: Renewable Energy 36 (2011) 10, pp. 2627-2634

This paper treats the design and control of two hybrid source using supercapacitors, fuel cell, with and without batteries on the DC link. A fuel cell, as a slowest dynamic source in these systems (because of its auxiliaries) acts to supply the permanent energy. The supercapacitors, as a high...

Persistent link: https://www.econbiz.de/10010806366

Analysis and synthesis of sliding mode control for large scale variable speed wind turbine for power optimization

Mérida, Jován; Aguilar, Luis T.; Dávila, Jorge - In: Renewable Energy 71 (2014) C, pp. 715-728

The problem of designing a nonlinear feedback control scheme for variable speed wind turbines, without wind speed measurements, in below rated wind conditions was addressed. The objective is to operate the wind turbines in order to have maximum wind power extraction while also the mechanical...

Persistent link: https://www.econbiz.de/10011046122

Integrated aeroelastic and control analysis of wind turbine blades equipped with microtabs

Macquart, Terence; Maheri, Alireza - In: Renewable Energy 75 (2015) C, pp. 102-114

This paper presents the results of an investigation into the performance of different controllers in active load control of wind turbine blades equipped with microtabs. A bang–bang (BB) controller, a linear quadratic regulator (LQR) a proportional integral derivative (PID) and a sliding mode...

Persistent link: https://www.econbiz.de/10011116524

Synchronization of DFIG output voltage to utility grid in wind power system

Abo-Khalil, Ahmed G. - In: Renewable Energy 44 (2012) C, pp. 193-198

This paper presents a new synchronization algorithm for grid connection of a doubly fed induction generator (DFIG) in a … circuit is used for synchronization process. By controlling the rotor d-axis current, the magnitude of the stator EMF is … be equal to the grid. The experimental results show a smooth synchronization and fast dynamic responses. Compared to the …

Persistent link: https://www.econbiz.de/10010805219