Voltage sag ride through using Improved Adaptive Internal Model Controller for doubly fed induction generator wind farms

Amuthan, N.; Subburaj, P.; Mary, P. Melba

doi:10.1016/j.compeleceng.2012.11.017

Cited by 10 publications

(3 citation statements)

References 21 publications

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“…An Adaptive internal model controller [19] suggested by the authors helps to adjust the gain to enhance overall system performance. Improved adaptive internal model controller [20] is studied using the Lyapunov stability enhancement using ANFIS-IMC to improve transient stability. PSO-GSA-based fuzzy sliding mode controller [21] combines PSO, GSA tuned fuzzy-SMC.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Low Voltage Ride-Through Resilience in Grid-Connected Doubly-Fed-Induction-Generator with Sliding Mode Controller

Ananth,

Vineela

2024

Preprint

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In power systems, grid disturbances are prevalent, causing significant challenges for Doubly-Fed Induction Generators (DFIGs). During these disturbances, the windings of DFIGs are exposed to large offset inrush currents, which can damage the converter switches and capacitors. Additionally, low voltage faults result in a dip in the rotor speed, leading to current injection in the rotor windings at the changed rotor slip frequency during the fault. This behaviour can be detected using stator two-axis instantaneous voltage and flux. In this study, we propose an innovative application of Sliding Mode Control (SMC) in both the rotor-side converter (RSC) and grid-side converter (GSC) control schemes of a DFIG. The primary objective is to effectively control the flux decay and reduce torque pulsations, rotor speed variations, and current deviations through an enhanced SMC approach. The proposed technique compensates and rapidly decomposes the stator dc-offset flux component based on deviations in the speed of the rotor with the reference value and the dc flux. To assess the effectiveness of the proposed approach, we conduct a comparative analysis between the conventional Proportional-Integral (PI) control and the proposed SMC technique under symmetrical grid fault conditions. The results demonstrate the superior performance of the enhanced SMC in mitigating the adverse effects of grid disturbances on DFIGs.

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Section: Introductionmentioning

confidence: 99%

Enhancing Low Voltage Ride-Through Resilience in Grid-Connected Doubly-Fed-Induction-Generator with Sliding Mode Controller

Ananth,

Vineela

2024

Preprint

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“…A control technique of the GSC is proposed in [16], in order to direct the rotor power ow during grid fault conditions. Rotor current controller based on adaptive internal model control is designed in [17]; with different adjustment mechanisms similar to Lyapunov theory, fuzzy and adaptive neuro-fuzzy inference system to improve the voltage sag ride through. One of the most important matters involved in WECS improvement is linked to the inclusion of new robust control strategies, based on low computational time, cost algorithms capable of optimizing the system ef ciency, while, reducing structural loading.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review of LVRT capability and sliding mode control of grid-connected wind-turbine-driven doubly fed induction generator

et al. 2016

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Original scienti c paper In this paper, a comprehensive review of several strategies applied to improve the Low Voltage Ride-Through (LVRT) capability is presented for grid-connected wind-turbine-driven Doubly Fed Induction Generator (DFIG). Usually, the most proposed LVRT solutions in the literature based on: hardware solutions, which increase the system costs and software solutions, which increase the control system complexity. Therefore, the main objective of this study is to take into account grid requirements over LVRT performance under grid fault conditions using software solution based on Higher Order-Sliding Mode Control (HOSMC). Effectively, this control strategy is proposed to overcome the chattering problem and the injected stator current harmonics into the grid of the classical First Order Sliding Mode (FOSMC). Furthermore, the resultant HOSMC methodology is relatively simple; where, the online computational cost and time are considerably reduced. The LVRT capacity and effectiveness of the proposed control method, compared to the conventional FOSMC, are validated by time-domain simulation studies under Matlab on a 1.5 MW wind-turbine-driven DFIG.

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“…In this sense, and due to the strong penetration of DFIG into wind turbine structures, much research in recent years has sought to improve robust and accurate control under various network disturbances [9]- [10]- [11]. With the increasing use of wind power, it has become unacceptable to accept disconnection of the wind turbine with each occurrence of a fault on the electrical grid.…”

Section: Introductionmentioning

confidence: 99%

Design of an Improved MPPT Control of DFIG Wind Turbine under Unbalanced Grid Voltage using a Flux Sliding Mode Observer

Majdoub¹,

Abbou²,

Akherraz³

et al. 2017

IJPEDS

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This study presents a control scheme of the electronic interface of a grid connected Variable Speed Wind Energy Generation System (VS-WEGS) based on a Doubly Fed Induction Generator (DFIG). The efficiency of the wind energy is represented to according to the control strategy applied. Thus, in the case of unbalanced grid voltage, the negative sequence voltage causes additional strong oscillation at twice the grid frequency in the stator instantaneous active and reactive powers. The objective of this work is to present an enhanced MPPT controller uses backstepping approach implemented in both dq + and dq − reference frames rotating to keep a safe operation of DFIG during unbalanced grid voltage associated with regulating rotor flux, in order to estimate rotor flux, a nonlinear observer based on sliding mode is proposed in this work. Note that the conventional controllers (PI, PI-R …) are not provided satisfactory performance during unbalanced voltage dips. The validation of results has been performed through simulation studies on a 4 kW DFIG using Matlab/Simulink

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Voltage sag ride through using Improved Adaptive Internal Model Controller for doubly fed induction generator wind farms

Cited by 10 publications

References 21 publications

Enhancing Low Voltage Ride-Through Resilience in Grid-Connected Doubly-Fed-Induction-Generator with Sliding Mode Controller

Enhancing Low Voltage Ride-Through Resilience in Grid-Connected Doubly-Fed-Induction-Generator with Sliding Mode Controller

A comprehensive review of LVRT capability and sliding mode control of grid-connected wind-turbine-driven doubly fed induction generator

Design of an Improved MPPT Control of DFIG Wind Turbine under Unbalanced Grid Voltage using a Flux Sliding Mode Observer

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