A Novel Fault-Tolerant DFIG-Based Wind Energy Conversion System for Seamless Operation During Grid Faults

Kanjiya, Parag; Ambati, Bharath Babu; Khadkikar, Vinod

doi:10.1109/tpwrs.2013.2290047

Cited by 59 publications

(18 citation statements)

References 17 publications

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“…The ESS is connected to the DC link and it will assist the DFIG to dampen the DC‐link voltage transient. Another research study suggested a nine‐switch converter for the GSC, hence, the additional three output terminals of the proposed nine‐switch GSC is used to connect with the neutral of the stator terminals (Kanjiya, Ambati, & Khadkikar, ). Therefore, these additional output terminals of the GSC are controlled to maintain the prefault conditions of the DFIG stator terminal during grid faults by alleviating adverse effect on rotor current due to stator transients during the grid fault.…”

Section: Frt Strategies For Selected Drersmentioning

confidence: 99%

Role of fault ride‐through strategies for power grids with 100% power electronic‐interfaced distributed renewable energy resources

Meegahapola

Datta

Nutkani

et al. 2018

WIREs Energy & Environment

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Electricity networks are evolving rapidly with the large-scale integration of power electronic (PE)-interfaced distributed renewable energy resources (DRERs). With this rapid deployment of PE-interfaced renewables, requirements set for the PE-interfaced DRERs have also evolved to maintain grid security and reliability. Fault ride-through (FRT) is an essential requirement which should be adhered by DRERs, which will ensure security and reliability of the power system during grid faults. This paper critically reviews the existing FRT standards (grid-code requirements) and FRT strategies implemented/ proposed for major DRERs, such as wind energy conversion systems (WECSs), solar photovoltaic (PV) systems, and microgrids. According to the review, robust FRT strategies are implemented/proposed DRERs, however, the FRT grid codes are presently developed with the perspective of both synchronous and renewable generation operating in the power system. However, this current approach should be augmented considering 100% PE-based renewable energy scenarios, and emerging issues, such as high penetration of PE-interfaced small-scale renewable generators (e.g., domestic solar-PV systems) and recurring grid faults, to achieve a sustainable renewable energy future. This article is categorized under: Concentrating Solar Power > Systems and Infrastructure Wind Power > Systems and Infrastructure Photovoltaics > Systems and Infrastructure K E Y W O R D S distributed renewable energy resources (DRERs), fault ride-through (FRT), gridcode requirements, microgrids, power electronic converters, solar-PV, wind energy conversion systems (WECSs)

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Section: Frt Strategies For Selected Drersmentioning

confidence: 99%

Role of fault ride‐through strategies for power grids with 100% power electronic‐interfaced distributed renewable energy resources

Meegahapola

Datta

Nutkani

et al. 2018

WIREs Energy & Environment

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“…The DFIG WTs rotor current increment due to the fault occurrence may damage the RSC and the GSC . Hence, it is necessary to design and use a proper protection scheme against the over currents such as crowbar.…”

Section: Problem Statementmentioning

confidence: 99%

Investigation and enhancement of SFCL impacts on DFIG-based wind turbine during fault and post-fault

Safaei

Hosseinian

Abyaneh

2016

Int. Trans. Electr. Energ. Syst.

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DFIG is generally used in wind turbines because of its many advantages. However, DFIGs are sensitive to the network faults. When a fault occurs, the DFIG rotor current is increased and its converters may be damaged. A general solution to protect the DFIG converters is crowbar protection. However, when the crowbar is activated, the rotor‐side‐converter is disconnected and DFIG control may be lost. Therefore, reducing the crowbar operation time is essential. The SFCL can present an efficient protection against severe faults. However, recovery time of SFCL has undesirable effects. In this study the impacts of SFCL on fault‐ride‐through capability of DFIG are investigated in detail by considering the thermal model of resistive‐type SFCL. The simulation results illustrate that by applying the SFCL, the rotor current is decreased and fault‐ride‐through capability of DFIG is enhanced. Finally, a novel approach to suppress unpleasant influences of nonzero recovery time of the SFCL is proposed.

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“…In [9] and [10], nine switch grid side converter has been proposed to overcome the fault situation in the power system. Meanwhile, in [11] and [12], a series gird side converter connected to a star point terminal of the stator including parallel gird side rectifier and three winding transformer have been utilized to make adequate power processing capability and ride though the low voltage.…”

Section: Introductionmentioning

confidence: 99%

Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter

Naderi

Negnevitsky

Jalilian

et al. 2017

International Journal of Electrical Power & Energy Systems

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, "Low voltage ride-through enhancement of DFIGbased wind turbine using DC link switchable resistive type fault current limiter," International Journal of Electrical Power and Energy Systems, vol. 86, pp. 104-119, 2017. Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter Abstract Doubly-fed induction generator (DFIG)-based wind turbines utilise small-scale voltage sourced converters with a limited overcurrent withstand capability, which makes the DFIG-based wind turbines very vulnerable to grid faults. Often, modern DFIG systems employ a crowbar protection at the rotor circuit to protect the rotor side converter (RSC) during grid faults. This method converts the DFIG to a squirrel cage induction generator, which does not comply with the new grid codes. The recent grid codes need wind turbines to stay connected to the utility grid during and after power system faults, especially in high penetration level of wind power. Furthermore, the crowbar switch is expensive. This paper proposes a novel DC-link switchable resistive-type fault current limiter (SRFCL) to improve the LVRT capability of the DFIG. The proposed SRFCL is employed in the DC side of the RSC. The SRFCL solves crowbar protection activation problems and eliminates subsequent complications in the DFIG system. The proposed SRFCL does not have any significant impact on the overall performance of the DFIG during normal operation. Whenever the fault, whether symmetrical or asymmetrical, occurs, the SRFCL not only limits rotor over-currents but also prevents rotor speed acceleration and restricts high torque oscillations even during zero grid voltage, as recommended by some grid codes. To prove the effective operation of the SRFCL on the RSC fault current limitation, analytical analysis is performed in each switching interval. The proposed approach is compared with the crowbar-based protection method. Simulation studies are carried out in PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach. Simulation studies are carried out in PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach.

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A Novel Fault-Tolerant DFIG-Based Wind Energy Conversion System for Seamless Operation During Grid Faults

Cited by 59 publications

References 17 publications

Role of fault ride‐through strategies for power grids with 100% power electronic‐interfaced distributed renewable energy resources

Role of fault ride‐through strategies for power grids with 100% power electronic‐interfaced distributed renewable energy resources

Investigation and enhancement of SFCL impacts on DFIG-based wind turbine during fault and post-fault

Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter

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