The Experts below are selected from a list of 8073 Experts worldwide ranked by ideXlab platform

Osamu Yamamoto - One of the best experts on this subject based on the ideXlab platform.

  • power management of double fed Induction Generator based wind power system with integrated smart energy storage having superconducting magnetic energy storage fuel cell electrolyser
    Iet Renewable Power Generation, 2011
    Co-Authors: N Gyawali, Y Ohsawa, Osamu Yamamoto
    Abstract:

    Energy storage devices are necessary to address the issues associated with stochastic variation of generated power in a wind energy conversion system. This study explores the control and operational aspects of integrating a smart energy storage system (SESS) into a Double-Fed Induction Generator-based wind power system. The fuel-cell/electrolyser subsystem of SESS is employed to provide long-term energy balance by utilising H 2 as storage medium, whereas the superconducting magnetic energy storage is employed as buffer storage for transient compensation. The control schemes enable the integrated system to operate seamlessly in different modes fulfilling the operational requirements. Here, system configuration is proposed, control scheme is designed and the detailed dynamic modelling is developed for each component of the system. Simulation is carried out to study the control behaviour of wind turbines during the sudden load change and wind speed variations. The results demonstrate the applicability of the overall operational and control architecture for hybrid wind/storage operation. The control scheme of SESS and power management technique employed into the grid-side converter system, in particular, highlight the capability of the proposed system in managing intermittency and making it a dispatchable entity.

Pablo Federico Puleston - One of the best experts on this subject based on the ideXlab platform.

  • multivariable 2 sliding mode control for a wind energy system based on a double fed Induction Generator
    International Journal of Hydrogen Energy, 2012
    Co-Authors: Carolina Alejandra Evangelista, F Valenciaga, Pablo Federico Puleston
    Abstract:

    Abstract The purpose of this paper is to present a control strategy using Multiple Input/Multiple Output (MIMO) Second Order Sliding Modes (SOSM) for a grid-connected variable-speed Wind Energy Conversion System (WECS). The latter is based on a Double Fed Induction Generator (DFIG) in a bidirectional configuration with slip power recovery. Its points of operation can be electronically controlled and, with them, two independent control objectives can be stated. Thus, a control is designed to maximize the energy captured from the wind and to regulate the stator reactive power, contributing to the compensation of the power factor according to grid requirements. The proposed technique can be applied to nonlinear MIMO systems and allows to make a separate design for each component of the controller. For these designs the Super-Twisting algorithm is employed in this work, which possesses excellent properties regarding simplicity of implementation and online operation, and robustness against uncertainties and external disturbances. Finally, representative simulation results are presented and analyzed.

Gerardo Tapia - One of the best experts on this subject based on the ideXlab platform.

  • sliding mode control of a wind turbine driven double fed Induction Generator under non ideal grid voltages
    Iet Renewable Power Generation, 2013
    Co-Authors: Miren Itsaso Martinez, Ana Susperregui, Gerardo Tapia
    Abstract:

    Control algorithms for the rotor- and grid-side power converters of a Double-Fed Induction Generator (DFIG)-based wind turbine under non-ideal grid voltage conditions are proposed, and guidelines for tuning the controller parameters are presented. The control schemes are based on sliding-mode control (SMC) theory. Apart from directly controlling the DFIG's average active and reactive powers, the proposed methods also fulfil two additional control targets during voltage unbalance and harmonic distortion, that is, the rotor-side converter (RSC) eliminating electromagnetic torque fluctuations and the gridside converter (GSC) compensating for the stator current harmonics to ensure a sinusoidal total current from the overall generating unit. The described control strategies are proved to be robust against parameter deviations and of fast dynamic response. In spite of the discontinuous nature of the standard SMC, constant converter switching frequency is achieved. Besides, the RSC control algorithm does not require a phase-locked loop and, furthermore, there is no need for decomposing the grid voltage and different currents into symmetrical sequences or harmonic components in any of the converters' control systems. Finally, the excellent performance of the system, as well as its robustness, is verified by means of simulation results under different grid voltage conditions.

Chanxia Zhu - One of the best experts on this subject based on the ideXlab platform.

  • parameters impact on the performance of a double fed Induction Generator based wind turbine for subsynchronous resonance control
    Iet Renewable Power Generation, 2012
    Co-Authors: Chanxia Zhu
    Abstract:

    With increasing wind power in power systems, impact of subsynchronous resonance (SSR) on wind Generator is of interest. This study presents the models of a Double-Fed Induction Generator (DFIG)-based wind turbine in a series-compensated network for SSR study. For DFIG (Induction machine), the Induction Generator effect (IGE) is the most important factor of SSR. The control scheme for IGE is proposed in this study and the impact of the control parameters is also studied in detail. Eigenvalue analysis is conducted to study the impact of wind speeds, series compensation levels and control scheme on IGE phenomena. Time-domain simulations are performed in Matlab/Simulink to confirm the analysis.

Youcef Harbouche - One of the best experts on this subject based on the ideXlab platform.

  • adaptive direct power control for double fed Induction Generator used in wind turbine
    International Journal of Electrical Power & Energy Systems, 2020
    Co-Authors: Farida Mazouz, Sebti Belkacem, Ilhami Colak, Said Drid, Youcef Harbouche
    Abstract:

    Abstract This papers deal with a new Adaptive Direct Power Control for Doubly-Fed Induction Generator of 1.5 MW. The main feature of the proposed strategy is based on the replacement of the fixed switching table by an adaptive one. The online update of the adaptive switching table depends on the reactive power variation and past switching sequences. The proposed adaptive direct power control is compared with Vector Control and Classical Direct Power Control. The robustness of the proposed control scheme against parameter, load and wind speed variations have done with success. The main performance of the Adaptive Direct Power Control strategy is the reduction of powers ripples, thus reduce of torque ripple on the shaft of the turbine.