Decoupled Direct Control of Natural and Power Variables of Doubly Fed Induction Generator for Extended Wind Speed Range Using Feedback Linearization

Balogun, Adeola; Ojo, Olorunfemi; Okafor, Frank

doi:10.1109/jestpe.2013.2283149

Cited by 29 publications

(9 citation statements)

References 28 publications

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“…The step prior to WECS grid interconnection is its synchronization by means of appropriate power electronics and a suitable control strategy [47]. WECS grid synchronization with DFIG technology is commonly achieved by back-to-back voltage source converters (BBVSC) with SVM [48]- [52]. Control schemes recently explored with IMCs include the usage of a variety of classic vector control schemes such as direct torque control and voltage-oriented control using PI regulators [53], [54].…”

Section: Index Terms-ac/acmentioning

confidence: 99%

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Elizondo

Olloqui

Rivera

et al. 2014

IEEE J. Emerg. Sel. Topics Power Electron.

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A novel predictive rotor current control scheme for a doubly fed induction generator (DFIG) is implemented to perform the DFIG grid synchronization with a fast dynamic response. With this control strategy applied to an experimental setup, the rotor currents swiftly follow the necessary reference for grid synchronization in the range of ±30% of the generator rated shaft speed. The DFIG and converter discrete models are used to predict the behavior of the rotor currents. By minimizing the error between the references and the predictive rotor currents for each of the valid states of the converter, the best-suited switching state is selected and applied at the next sampling time. In order to validate the feasibility of implementing this approach, simulations and experiments were carried out for various shaft speed profiles.

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Section: Index Terms-ac/acmentioning

confidence: 99%

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Elizondo

Olloqui

Rivera

et al. 2014

IEEE J. Emerg. Sel. Topics Power Electron.

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“…In order to construct a crowbar triggering circuit, a thyristor is used that can be triggered by a gate signal. The circuit will remain in the conduction mode until crowbar current is extinguished [28,29,[43][44][45]. On the other side, IGBTs are used in the construction of an active crowbar triggering circuit.…”

Section: Crowbar Protectionmentioning

confidence: 99%

An LVRT Scheme for Grid Connected DFIG Based WECS Using State Feedback Linearization Control Technique

et al. 2019

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This paper primarily focuses on an advance control strategy to enhance the low voltage ride through (LVRT) capability in doubly fed induction generator (DFIG) based wind energy conversion system (WCES). In the proposed control strategy, the captured wind energy during grid faults circumstances is stored timidly in the rotor’s inertia kinetic energy. Though a minimal amount of energy is available in the grid, stator current and DC-link voltage are set beneath the perilous levels. However, both the required stator voltage and stator current are kept within a tolerable range of rotor side converter (RSC), through state feedback linearization technique for maintaining the accurate control to suppress the overvoltage and overcurrent. Furthermore, stator current oscillations are significantly suppressed during fault transient. The input mechanical energy from the wind turbine can be resumed after the fault clearance. In spite of being dissipated in the resistors of crowbar circuit, as in the conventional LVRT assemblies, torque balancing among electrical and mechanical measures is attained; DC-link voltage instabilities and rotor speed inconsistencies are substantially reduced. As a result, a noticeable reduction in the requirement of reactive power and swift restoration of terminal voltage on fault clearance is acquired successfully. Correspondingly, several tests are conducted to validate the effectiveness and enhancement in the performance of the DFIG based wind farms, when the proposed control strategy is implemented over it during numerous fault ride-through circumstances.

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“…Some of these works are highlighted below. An input-output feedback linearization controller for a DFIG-based system connected to an infinite bus was discussed in [35]; the authors differentiated the electromagnetic torque, the stator power and the grid side converter power outputs of the DFIG to obtain a linear relationship with the rotor voltages, which serve as control inputs. Then, decoupled torque control and decoupled power control were developed.…”

Section: Introductionmentioning

confidence: 99%

Feedback Linearization Controller for a Wind Energy Power System

2016

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This paper deals with the control of a doubly-fed induction generator (DFIG)-based variable speed wind turbine power system. A system of eight ordinary differential equations is used to model the wind energy conversion system. The generator has a wound rotor type with back-to-back three-phase power converter bridges between its rotor and the grid; it is modeled using the direct-quadrature rotating reference frame with aligned stator flux. An input-state feedback linearization controller is proposed for the wind energy power system. The controller guarantees that the states of the system track the desired states. Simulation results are presented to validate the proposed control scheme. Moreover, further simulation results are shown to investigate the robustness of the proposed control scheme to changes in some of the parameters of the system.

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Decoupled Direct Control of Natural and Power Variables of Doubly Fed Induction Generator for Extended Wind Speed Range Using Feedback Linearization

Cited by 29 publications

References 28 publications

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

Model-Based Predictive Rotor Current Control for Grid Synchronization of a DFIG Driven by an Indirect Matrix Converter

An LVRT Scheme for Grid Connected DFIG Based WECS Using State Feedback Linearization Control Technique

Feedback Linearization Controller for a Wind Energy Power System

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