Analysis and estimation of transient stability for a grid-connected wind turbine with induction generator

Li, H.; Zhao, Bin; Yang, Chao; Chen, H.W.; Chen, Z.

doi:10.1016/j.renene.2010.08.023

Cited by 44 publications

(26 citation statements)

References 12 publications

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“…The advantages of a PMSG configuration are gearless construction, the elimination of a dc excitation system, full controllability of the system for maximum wind power extraction and grid interface; and straightforward in accomplishing fault-ride through and grid support [7,20,21]. However, the major drawback of the PMSG is the high cost of the PM material and power converter [28].…”

Section: Wind Turbine Generators Technologiesmentioning

confidence: 99%

“…The induction generator is described by 5th nonlinear mathematical model, in the space vector by the following state-space form [3,20,21] 1…”

Section: Model Of the Induction Generatormentioning

confidence: 99%

“…This topology is simple, less expensive and effective. But, it suffers from the low energy capture, mechanical stress and mediocre power quality [8,20,21,25]. …”

Section: Introductionmentioning

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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Section: Wind Turbine Generators Technologiesmentioning

confidence: 99%

“…The induction generator is described by 5th nonlinear mathematical model, in the space vector by the following state-space form [3,20,21] 1…”

Section: Model Of the Induction Generatormentioning

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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“…In [12][13][14][15], the mechanical torque output of the WT was assumed to be constant, during and after the fault occurrence. This may not be true, because the characteristics of mechanical torque (T m ) depend on the tip speed ratio, (λ) and power coefficient (C p ), which depend on the pitch angle (β), wind speed (V ), slip (s) and radius of WT.…”

Section: Introductionmentioning

confidence: 99%

Improving Transient Stability in a Grid-Connected Squirrel-Cage Induction Generator Wind Turbine System Using a Fuzzy Logic Controller

et al. 2015

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A common problem in wind power plants involves fixed-speed wind turbines. In fact, being equipped with a squirrel-cage induction generator (SCIG), they tend to drain a relevant amount of reactive power from the grid, potentially causing voltage drops and possible voltage instability. To improve SCIG power quality and transient stability, this paper investigates a new control strategy for pitch angle control based on proportional-integral (PI) controller and a fuzzy logic controller (FLC), considering both normal and fault ride-through (FRT) schemes. In the literature, often, the mechanical torque output is assumed constant for a specific wind speed. This might not be accurate, because the mechanical torque-speed typical of a wind turbine depends also on the power coefficient or pitch angle. In this paper, an analytic model of transient stability is proposed using the equivalent circuit of the SCIG and using the concepts of stable and unstable electrical-mechanical equilibrium. The method has been evaluated by comparing the results obtained by the analytic method with the dynamic simulation. The results show that the proposed hybrid controller is effective at smoothing the output power and complying with FRT requirements for SCIG in the power system.

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“…[2][3] The wind turbine is constituted by the wind wheel, pitch system, wheel hub, body (including the cabin, base and tower), transmission actuator, gearbox, generator, controll system, sensors, break system, hydraulic system, yaw-control system, and so on. [4][5] By the wind turbine, the wind energy is transformed into mechanical energy firstly, and then drawing support from the main shaft, gearbox, and generator, the mechanical energy is transformed into electrical energy that achieve the wind power generation. The generator is the key composition of wind turbines.…”

Section: Introductionmentioning

confidence: 99%

Vibration testing and controlling for wind turbine generator

Jiang¹

2012

IOSRJEN

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:--Generator is the key composition of wind turbines. The vibration of generator would accelerate the wear of its parts and shorten the service life, at the same, the vibration are easy to evoke the vibation of neighbor devices that would make lots of noise, so the study on the techonology of vibration testing and controlling for generator has important significance to the safe and efficient operation of generator, even wind turbines. This paper performs vibration testing on three over-vibration generator, and the collected vibration signals are analyzed , the causes of the over-vibration are illustrated, then the actions of vibration controlling are adopted, finally, the over-vibration are controlled efficiently. This studies has instructional significance and referenced value for the over-vibration adjustment and controlling in the running scene. .

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Analysis and estimation of transient stability for a grid-connected wind turbine with induction generator

Cited by 44 publications

References 12 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

Improving Transient Stability in a Grid-Connected Squirrel-Cage Induction Generator Wind Turbine System Using a Fuzzy Logic Controller

Vibration testing and controlling for wind turbine generator

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