Coordinated Control of DFIG's RSC and GSC Under Generalized Unbalanced and Distorted Grid Voltage Conditions

Hu, Jiabing; Xu, Hailiang; He, Yikang

doi:10.1109/tie.2012.2217718

Cited by 141 publications

(89 citation statements)

References 21 publications

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“…It is worth noting that the amplitude of rotor current oscillations depends on the time instant at which the voltage dip applies. A new coordinated control strategy has been proposed to improve the oscillatory responses, where the RSC is controlled to eliminate the torque oscillations while the GSC is designed to obtain constant active power output and to minimize the oscillations in the DC link voltage [38].…”

Section: Effect Of the Grid Voltage Dipmentioning

confidence: 99%

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Zhang

et al. 2017

Energies

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This paper analyses the effects of doubly fed induction generator (DFIG) tidal current turbines on a distribution grid under unbalanced voltage conditions of the grid. A dynamic model of an electrical power system under the unbalanced network is described in the paper, aiming to compare the system performance when connected with and without DFIG at the same location in a distribution grid. Extensive simulations of investigating the effect of DFIG tidal current turbine on stability of the distribution grid are performed, taking into account factors such as the power rating, the connection distance of the turbine and the grid voltage dip. The dynamic responses of the distribution system are examined, especially its ability to ride through fault events under unbalanced grid voltage conditions. The research has shown that DFIG tidal current turbines can provide a good damping performance and that modern DFIG tidal current power plants, equipped with power electronics and low-voltage ride-through capability, can stay connected to weak electrical grids even under the unbalanced voltage conditions, whilst not reducing system stability.

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Section: Effect Of the Grid Voltage Dipmentioning

confidence: 99%

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Zhang

et al. 2017

Energies

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“…Considering that the grid voltage always suffers from harmonics and imbalances even during normal operation conditions [3][4][5], the GSC operation performance and output power quality may degrade due to the limited capability of traditional vector control. It had been reported that current distortion and active/reactive power fluctuations arise from GSC under unbalanced and harmonic distorted grid voltage conditions [6][7][8], which will reduce the power quality of GSC and pollute the network further. To enhance the operation performance of GSC under unbalanced and harmonic distorted grid conditions, several control strategies based on the linear controllers, such as the multi-PI controllers [9], PI plus resonant (PIR) controller [10][11][12], PR controller [13][14], were proposed.…”

Section: Introductionmentioning

confidence: 99%

Multi-resonant based sliding mode control of grid-connected converter under distorted grid conditions

Quan

Nian

2013

2013 IEEE Energy Conversion Congress and Exposition

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The paper presented a multi-resonant based sliding mode control (MRSMC) strategy for the grid-connected voltage source converter under the distorted grid voltage conditions. By employing the multi-resonant sliding surface, two different control targets including the sinusoidal current and steady active/reactive power can be achieved under both unbalanced and harmonic distorted grid voltage conditions. The proposed control strategy has some attractive features, such as constant converter switching frequency, no need of phase-locked loop, fast transient response and insensitivity to the inductance parameters variations. And the chattering phenomenon can be avoided by using second order sliding mode. The availability of the proposed strategy is validated by both simulation and experimental tests.

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“…However, the grid voltage is in an ideal state and no voltage disturbance is considered on the grid side. As a matter of fact, the operation of DFIG-based WECS under non-ideal grid conditions, including voltage distortion, voltage unbalance and harmonic/interharmonic current components prove to be more critical and of practical importance [25][26][27][28][29]. Hence, in [30] a SMC method was proposed to control the GSC and (RSCs of a DFIG-based WECS, where an unbalanced and harmonically distorted grid voltage condition is considered.…”

mentioning

confidence: 99%

Sliding Mode Control of DFIG Wind Turbines with a Fast Exponential Reaching Law

Xiong

et al. 2017

Energies

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This paper proposes a novel sliding mode control (SMC) technique for doubly fed induction generators (DFIGs) based on the fast exponential reaching law (FERL). The proposed FERL-based SMC is capable of reducing to a large extent the chattering phenomena existing in the sliding stage. Meanwhile, the reaching stage is accelerated with the introduction of an adaptive gain. The proposed method is employed in a DFIG-based wind energy conversion system (WECS) for direct power control (DPC). The FERL-based DPC approach is tested with simulations conducted in Matlab/Simulink under the scenarios of unbalanced grid voltage, grid fault conditions and highly unstable wind speed accompanied by an experimental study. The simulations and experimental results reveal the better performance of the proposed control method in active/reactive power tracking and dc-link voltage maintenance.

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Coordinated Control of DFIG's RSC and GSC Under Generalized Unbalanced and Distorted Grid Voltage Conditions

Cited by 141 publications

References 21 publications

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Multi-resonant based sliding mode control of grid-connected converter under distorted grid conditions

Sliding Mode Control of DFIG Wind Turbines with a Fast Exponential Reaching Law

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