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A real time sliding mode control for a wave energy converter based on a wells turbine
(Elsevier, 2018-06-18)
Due to the nonlinear dynamics and uncertainties usually present in wave energy conversion systems, the efficiency of these devices can be enhanced employing a robust control algorithms. Wave energy converters are constructed ...
Real time observer and control scheme for a wind turbine system based on a high order sliding modes
(Elsevier, 2021-05-24)
The introduction of advanced control algorithms may improve considerably the efficiency of wind turbine systems. This work proposes a high order sliding mode (HOSM) control scheme based on the super twisting algorithm for ...
Multi-Objective Optimisation-Based Tuning of Two Second-Order Sliding-Mode Controller Variants for DFIGs Connected to Non-Ideal Grid Voltage
(MPDI, 2019-10-05)
In this paper, a posteriori multi-objective optimisation (MOO) is applied to tune the parameters of a second-order sliding-mode control (2-SMC) scheme commanding the grid-side converter (GSC) of a doubly-fed induction ...
Complex-Variable Sliding-Mode Control of Instantaneous Complex Energy and Power for Grid-Tied Inverter
(Elsevier, 2023-11)
A complex-variable sliding-mode control (SMC) algorithm is proposed to govern inverters interfacing renewable energy sources (RESs) with the electrical grid. It is conceived to control the instantaneous energy stored in ...
Student-tailored final year project on microcontroller-based hardware-in-the-loop speed control of a wind generator
(SAGE, 2018-03-27)
Student-supervisor cooperation was carried out to design the inter-subject final year project reported in this paper. According to the student feedback, this approach allowed gathering his main interests – vector control, ...
Nonlinear Controller Allowing the Use of a Small-Size DC-Link Capacitor in Grid-Feeding Converters
(IEEE, 2023-05-01)
In this article, we propose an instantaneous complex power control (ICPC) for a grid-tied voltage-source converter, which has two important features: it allows injecting currents with low distortion to the grid, and it ...
Second-order sliding-mode-based global control scheme for wind turbine-driven DFIGs subject to unbalanced and distorted grid voltage
(Wiley / The Institution of Engineering and Technology (IET), 2017-07-01)
Control algorithms for both the rotor- and grid-side power converters of a wind turbine-driven doubly-fed induction generator (DFIG) are detailed, and tuning equations are also provided to assist adjustment of their gains ...
Computational Modelling of Rectangular Sub-Boundary Layer Vortex Generators
(MDPI, 2018-01-19)
Vortex generators (VGs) are increasingly used in the wind turbine manufacture industry as flow control devices to improve rotor blade aerodynamic performance. Nevertheless, VGs may produce excess residual drag in some ...
Computational Modelling of Three Different Sub-Boundary Layer Vortex Generators on a Flat Plate
(MDPI, 2018-11-10)
Flow separation is the source of several problems in a wind turbine including load fluctuations, lift losses, and vibrations. Vortex generators (VGs) are passive flow control devices used to delay flow separation, but their ...
Computational Characterization of a Rectangular Vortex Generator on a Flat Plate for Different Vane Heights and Angles
(MDPI, 2019-03-01)
Vortex generators (VG) are passive flow control devices used for avoiding or delaying the separation of the boundary layer by bringing momentum from the higher layers of the fluid towards the surface. The Vortex generator ...