Low-Voltage Ride-Through Techniques in DFIG-Based Wind Turbines: A Review

Qin, Boyu; Li, Hengyi; Zhou, Xingyue; Li, Jing; Liu, Wansong

doi:10.3390/app10062154

Cited by 48 publications

(44 citation statements)

References 83 publications

(137 reference statements)

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“…Hence, it is ideal to make WTs stay connected to the power grid and provide support during transient periods as per the present GCRs. As per GCRs, the main LVRT grid criteria behaviours are characterised as follows [13,14,33]: (i) till 0.65 s after fault inception, the WTs shall remain connected to the grid. (ii) The permitted fault voltage (i.e.…”

Section: Proposed Control Strategies Employed For Dfig-based Wecsmentioning

confidence: 99%

“…In practice, the methodologies based on the modification of DFIG converter topologies and control strategies are more attractive in achieving the required LVRT capability due to their easy implementation and low cost. A comprehensive overview of LVRT-control methodologies of the wind generators is discussed in [13,14]. In [11], a feed-forward transient current control approach is proposed in which an additional feed-forward transient compensation (FFTC) is introduced to a conventional current regulator to limit the rotor transient currents and minimise the occurrence of crowbar interruptions during grid faults.…”

Section: Introductionmentioning

confidence: 99%

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Modified demagnetisation control strategy for low‐voltage ride‐through enhancement in DFIG‐based wind systems

Senapati¹,

Pradhan

Nayak

et al. 2020

IET Renewable Power Generation

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The large-scale wind energy conversion systems (WECSs) based on doubly-fed induction generators (DFIGs) are very popular in recent years due to the numerous technical and economic benefits. With the increasing penetration level of wind energy, the latest grid codes require the DFIG-based WECSs to remain connected to the grid under grid fault scenarios and deliver the required reactive power into the grid. However, the direct connection of the stator of the DFIG to the grid makes it prone to grid disturbances, especially to voltage sag. This study proposes a modified demagnetisation control strategy to enhance the low-voltage ride-through (LVRT) capability of the DFIG under grid faults. The proposed control strategy is implemented in a coordinated approach by using the existing demagnetisation control and the addition of an external resistance in the stator side of the DFIG. The demagnetisation control damps the direct current component of the stator flux and the external resistance accelerates the damping of the transient flux by decreasing the time constant and hence, enhancing the LVRT capability of DFIG. The effectiveness of the proposed control strategy is demonstrated under both symmetrical and asymmetrical grid faults simulated system through MATLAB/Simulink®. The comparative results justify the merits of the proposed methodology. s time constant, s ω r angular speed of rotor flux, r.p.m. ω s angular speed of stator flux, r.p.m. *r *superscript denoted for the rotor reference frame *1,2,0 *subscript denoted for positive-, negative-, and zerosequence components, respectively

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Section: Proposed Control Strategies Employed For Dfig-based Wecsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modified demagnetisation control strategy for low‐voltage ride‐through enhancement in DFIG‐based wind systems

Senapati¹,

Pradhan

Nayak

et al. 2020

IET Renewable Power Generation

View full text Add to dashboard Cite

show abstract

“…In recent years, renewable energy production has made great strides around the world to meet the challenge of drastic climate change and increasing demand for energy [1]. Among the various renewable energy sources, wind power is the fastest growing in the world [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…Among the various renewable energy sources, wind power is the fastest growing in the world [2,3]. In 2019, The 60.4 GW of new installations brings global cumulative wind power capacity up to 651 GW, and the Global Wind Energy Council (GWEC) predicts that more than 55 GW of new capacity will be added each year until in 2023 [1,4]. With the development of wind power, wind turbines (WTs) are widely used in electrical power systems.…”

Section: Introductionmentioning

confidence: 99%

Enhanced LVRT capability of Wind Turbine based on DFIG using Dynamic Voltage Restorer controlled by ADRC-based Feedback control

et al. 2021

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For grid-connected DFIG-based wind turbine, Fault Ride Through (FRT) or Low Voltage Ride Through (LVRT) capability is vital problem that need to be improved. This paper proposes an Active Disturbance Rejection Control (ADRC) strategy applied to Doubly Fed Induction Generator (DFIG) based Wind turbine (WT), which integrates a Dynamic Voltage Restorer (DVR). The DVR connect in series the DFIG output terminal and the utility grid. The ADRC scheme of the new topology DFIG-based WT with integrated DVR is designed to compensate grid voltage disturbances, which in turn meet LVRT requirement and increase the level of wind power penetration. The performance of this WT-DFIG-DVR structure is investigated in different operating scenarios in order to show the skills of the designed controllers.

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“…The modular multilevel converter based high-voltage direct current (MMC-HVDC) has been widely applied in large-scale renewable energy integration and asynchronous power grid interconnection [1][2][3]. Compared with the conventional line-commutated converter (LCC) and two-or three-level voltage source converters (VSCs), the MMC has become the most promising and competitive alternative due to its high modularity, no commutation failure, and excellent output waveforms [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Efficient EMT-Type Model of the MMCs Based on Arm Equivalence

2020

Applied Sciences

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The large number of switching elements in modular multilevel converters (MMCs) contribute a tremendous computational burden for electromagnetic transient (EMT) simulation programs. Detailed equivalent models (DEMs) and average value model (AVMs) are currently two major types of accurate and efficient model. However, the DEMs are still computationally inefficient for the simulation scenarios in large-scale MMC based high-voltage direct current (MMC-HVDC) grids, as the models represent all submodule (SMs) switching events, and memorize all individual capacitor voltages. Though the AVMs provide a faster simulation speed by using a single equivalent capacitor on the DC side, they have a relatively low simulation accuracy compared to DEMs, especially under blocked mode. This paper proposes an enhanced computationally efficient model based on arm equivalence (AEM), which can accurately represent the dynamic behaviors in both de-blocked and blocked modes. Compared to the DEMs, the proposed AEM is more efficient, with no loss of accuracy, and the simulation speed is irrespective of the SM number. The accuracy and computational efficiency of the proposed model were validated against the DEM and AVM through several simulation scenarios in a two-terminal MMC-HVDC system on the power systems computer aided design/ electromagnetic transient in DC system (PSCAD/EMTDC) program.

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Low-Voltage Ride-Through Techniques in DFIG-Based Wind Turbines: A Review

Cited by 48 publications

References 83 publications

Modified demagnetisation control strategy for low‐voltage ride‐through enhancement in DFIG‐based wind systems

Modified demagnetisation control strategy for low‐voltage ride‐through enhancement in DFIG‐based wind systems

Enhanced LVRT capability of Wind Turbine based on DFIG using Dynamic Voltage Restorer controlled by ADRC-based Feedback control

Enhanced Efficient EMT-Type Model of the MMCs Based on Arm Equivalence

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