Impact of DC-link fault on the dynamic performance of DFIG

Yunus, A. M. Shiddiq; Masoum, Mohammad A. S.

doi:10.1109/pesgm.2012.6345278

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…It makes the DC-link voltage to collapse, with currents flowing to supply the fault from both converters through the freewheeling diodes. The faults result in reduced active power output which drops to zero in case of unsuccessful fault clearance [21,40].…”

Section: Faults From the Machine Faults In The Dfig Wecs Occur In Fomentioning

confidence: 99%

A Concise Presentation of Doubly Fed Induction Generator Wind Energy Conversion Systems Challenges and Solutions

Mwaniki

Hui

Dai

2017

Journal of Engineering

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There is increased worldwide wind power generation, a large percentage of which is grid connected. The doubly fed induction generator (DFIG) wind energy conversion system (WECS) has many merits and, as a result, large numbers have been installed to date. The DFIG WECS operation, under both steady state and fault conditions, is of great interest since it impacts on grid performance. This review paper presents a condensed look at the various applied solutions to the challenges of the DFIG WECS including maximum power point tracking, common mode voltages, subsynchronous resonance, losses, modulation, power quality, and faults both internal and from the grid. It also looks at approaches used to meet the increasingly stringent grid codes requirements for the DFIG WECS to not only ride through faults but also provide voltage support. These are aspects of the DFIG WECS that are critical for system operators and prospective investors and can also serve as an introduction for new entrants into this area of study.

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Section: Faults From the Machine Faults In The Dfig Wecs Occur In Fomentioning

confidence: 99%

A Concise Presentation of Doubly Fed Induction Generator Wind Energy Conversion Systems Challenges and Solutions

Mwaniki

Hui

Dai

2017

Journal of Engineering

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“…Faults could originate internally from the machine or externally from the grid. Table 1 gives a summary of the internal faults, their effects, and solutions proposed [6,7,19,[64][65][66][67][68][69][70][71][72][73]. Over 50% of internal faults are attributed to the PEC with 30% being from the DC-link capacitor.…”

Section: Faultsmentioning

confidence: 99%

A Condensed Introduction to the Doubly Fed Induction Generator Wind Energy Conversion Systems

Mwaniki

Lin

Dai

2017

Journal of Engineering

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The increase in wind power penetration, at 456 GW as of June 2016, has resulted in more stringent grid codes which specify that the wind energy conversion systems (WECS) must remain connected to the system during and after a grid fault and, furthermore, must offer grid support by providing reactive currents. The doubly fed induction generator (DFIG) WECS is a well-proven technology, having been in use in wind power generation for many years and having a large world market share due to its many merits. Newer technologies such as the direct drive gearless permanent magnet synchronous generator have come up to challenge its market share, but the large number of installed machines ensures that it remains of interest in the wind industry. This paper presents a concise introduction of the DFIG WECS covering its construction, operation, merits, demerits, modelling, control types, levels and strategies, faults and their proposed solutions, and, finally, simulation. Qualities for the optimal control strategy are then proposed. The paper is intended to cover major issues related to the DFIG WECS that are a must for an overview of the system and hence serve as an introduction especially for new entrants into this area of study.

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“…Disconnecting a large MWs DFIG from the grid means large economic loses to the WTGs' owner. Some papers discusses the impact of DFIGs' dynamic performance during grid faults such as voltage sags [10] and swell [11] as well as internal faults event that might occur at the converters of DFIG [12,13]. However, not much attention is given to the case of grid frequency variation impacts on the dynamic performance of DFIG.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Grid Frequency Variation on Dynamic Performance of DFIG Based Wind Turbine

Yunus¹

2018

EasyChair Preprints

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Wind energy is one of popular sources of renewable energy that massively used to generate electric power nowadays. Among wind generator technologies, Doubly Fed Induction Generator (DFIG) is placed as the first dominant wind generator type that is installed worldwide since 2004. Its popularity is due to the advantages of its capability to extract more energy compare to the fixed speed type. Moreover, it uses only one-third converter size which reduced the total construction cost compared to its closest rival, Full Converter Wind Turbine Generator Type. Although DFIG widely installed worldwide, it is in fact, very sensitive to the grid disturbances such as frequency variation. Based on IEEE standard for 60 Hz system, a power system should not be allowed to work in less than 59.3 Hz or more than 60.5 Hz. In this paper, DFIG-grid connected is extensively simulated in the condition of frequency variation that is carried out using Matlab/Simulink. The results show that some important parameters such as power output of the generator, voltage at point of common coupling, voltage at DC link and generator speed are experiencing significant rise/drop which in turn might damage the wind turbine generator.

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Impact of DC-link fault on the dynamic performance of DFIG

Cited by 5 publications

References 12 publications

A Concise Presentation of Doubly Fed Induction Generator Wind Energy Conversion Systems Challenges and Solutions

A Concise Presentation of Doubly Fed Induction Generator Wind Energy Conversion Systems Challenges and Solutions

A Condensed Introduction to the Doubly Fed Induction Generator Wind Energy Conversion Systems

Impacts of Grid Frequency Variation on Dynamic Performance of DFIG Based Wind Turbine

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