Sliding‐mode control of a wind turbine‐driven double‐fed induction generator under non‐ideal grid voltages

Martinez, Miren Itsaso; Susperregui, A.; Tapia, G.; Xu, Lie

doi:10.1049/iet-rpg.2012.0172

Cited by 83 publications

(62 citation statements)

References 24 publications

(50 reference statements)

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“…Methods to tackle this phenomenon have been developed [35]. More recently, This technique has been successfully applied for wind power system in [10,11,23,37].…”

Section: Control Technique Strategies Of Wecsmentioning

confidence: 99%

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Sliding Mode Control of Induction Generator Wind Turbine Connected to the Grid

Ouassaid

Elyaalaoui

Cherkaoui

2016

Advances and Applications in Nonlinear Control Systems

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Conventional fossil fuels such as coal, oil and natural gas are being reduced and become more and more a source of serious undesirable effects on the environment. Wind power is playing a major role in the effort to augment the share of renewable energy sources in the world energy mix with a continuously increasing penetration into the grid. Wind turbine generators can be divided into two basic categories: fixed speed and variable speed. Variable-speed wind energy systems are presently favored than fixed-speed wind turbines thanks to their higher wind power extraction, improved efficiency, reactive power support and voltage control. This study addresses the problem of control of Wind Energy Conversion System (WECS) in variable speed. To this end, two simultaneous control objectives, namely the maximization of the energy conversion efficiency based on Squirrel Cage Induction Generator (SCIG) wind turbine and the regulation of the active and reactive power feed to the grid, to guarantee Unit Power Factor (UPF), have been established. To deal with the complexity and nonlinearity of the system, the sliding mode control is adopted. Indeed, this technique provides an efficient tool for controller design and presents attractive features such as robustness to parametric uncertainties of the different components of the system. In this way, sliding-mode control laws are developed using Lyapunov stability analysis, to guarantee the reaching and sustaining of sliding mode and stability of the system control. Evaluation of the reliability and performance of the proposed sliding mode control approach has been established on a 3MW three-blade wind turbine. Simulation results demonstrate that the proposed control strategy is effective in terms of MPPT control strategy, active and reactive power tracking trajectories and robustness against system parameter variations.

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“…Methods to tackle this phenomenon have been developed [35]. More recently, This technique has been successfully applied for wind power system in [10,11,23,37].…”

Section: Control Technique Strategies Of Wecsmentioning

confidence: 99%

“…The dynamic sliding mode control laws (37) and (38) with stabilizing functions (23) and (30) Proof Consider the following positive definite Lyapunov function…”

Section: Theoremmentioning

confidence: 99%

Sliding Mode Control of Induction Generator Wind Turbine Connected to the Grid

Ouassaid

Elyaalaoui

Cherkaoui

2016

Advances and Applications in Nonlinear Control Systems

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show abstract

“…On the other hand, power electronics are controlled by means of the injection of discontinuous signals matching with the discontinuous nature of conventional SMC; therefore, conventional SMC can be used for direct switching of power electronics on DFIG applications, avoiding modulation. SMC has been successfully implemented in DFIG control and tested under unbalanced conditions and harmonics [11,[15][16][17][18]. However, the proposals given in [16,17] require modulation, and the tested faults are moderate since these do not represent a brusque variation in the stator voltage.…”

Section: Introductionmentioning

confidence: 99%

“…However, the proposals given in [16,17] require modulation, and the tested faults are moderate since these do not represent a brusque variation in the stator voltage. The SMC presented in [15][16][17][18] works under unbalanced conditions but implementation of the SMC regarding the commutation of the power electronics is not discussed.…”

Section: Introductionmentioning

confidence: 99%

Stator-Flux-Oriented Sliding Mode Control for Doubly Fed Induction Generator

Villanueva¹,

Rosales²,

Ponce³

et al. 2018

Adaptive Robust Control Systems

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Doubly-fed induction generator (DFIG) is the most implemented electric machine in wind energy conversion systems (WECSs) due to reduced size converter, active and reactive power control, and economic factors. However, the power electronic stage needs an accurate controller that allows to follow the stator power regulation despite the presence of disturbances. On the other hand, sliding-mode control (SMC) offers a fast-dynamic response and provides insensitivity to matched and bounded disturbance/ uncertainties, and its natural discontinuous control signals can be used for direct switching of power electronic devices. Switching frequency must be maintained inside acceptable values to avoid exceeding the maximum admissible switching frequency of semiconductors. The contribution of this chapter is a stator-flux-oriented SMC with a hysteresis band that limits the switching frequency of power electronic devices to a set value. Furthermore, the proposed SMCs ensure robustness against bounded lowvoltage grid faults. Unlike other nonmodulated techniques like direct torque control (DTC), there is no necessity of modifying the controller structure for withstanding lowdepth voltage dips. The controller injects negative sequence voltage/currents to compensate the unbalanced conditions. The advantages of the proposed SMC control are validated via simulations.

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“…Although the repetitive control is effective for rejecting periodic harmonics, it has a slow response and performance degradation in its disturbance rejection under non-periodic harmonics [4], [10]- [14]. The predictive control scheme may provide an instability problem due to parameter variations.…”

Section: Introductionmentioning

confidence: 99%

Power Quality Improvement for Grid Connected Inverters under Distorted and Unbalanced Grids

Kim¹,

Kim²,

Kim³

2016

Journal of Power Electronics

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A power quality improvement scheme for grid connected inverters, even in the presence of the disturbances in grid voltages due to harmonic distortions and three-phase imbalance, is presented for distributed generation (DG) power systems. The control objective is to force the inverter currents to follow their references with robustness even under external disturbances in grid voltages. The proposed scheme is realized by a disturbance observer (DOB) based current control scheme. Since the uncertainty in a system can be effectively canceled out using an estimated disturbance by the DOB, the resultant system behaves like a closed-loop system consisting of a disturbance-free nominal model. For experimental verification, a 2 kVA laboratory prototype of a grid connected inverter has been built using a digital signal processor (DSP) TMS320F28335. Through comparative simulations and experimental results under grid disturbances such as harmonic distortion and imbalance, the effectiveness of the proposed DOB based current control scheme is demonstrated.

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Sliding‐mode control of a wind turbine‐driven double‐fed induction generator under non‐ideal grid voltages

Cited by 83 publications

References 24 publications

Sliding Mode Control of Induction Generator Wind Turbine Connected to the Grid

Sliding Mode Control of Induction Generator Wind Turbine Connected to the Grid

Stator-Flux-Oriented Sliding Mode Control for Doubly Fed Induction Generator

Power Quality Improvement for Grid Connected Inverters under Distorted and Unbalanced Grids

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