High voltage ride-through of DFIG-based wind turbines

Feltes, C.; Engelhardt, Stephan; Kretschmann, J.; Fortmann, Jens; Koch, F.; Erlich, I.

doi:10.1109/pes.2008.4596803

Cited by 58 publications

(30 citation statements)

References 2 publications

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“…The major cause of voltage sags is system faults such as short circuits and faults to ground. Other causes include sudden loss of large generating units, transformers energizing, and switching in of large loads usually induction motors [11,[42][43][44] off of large loads due to the voltage sag, reactive power overcompensation from capacitor banks, or single-phase short-term interruptions [45,46]. (ii) Unbalanced/asymmetrical faults: these are (a) two-phase, (b) two-phase to ground, (c) one-phase to ground.…”

Section: Faults From the Power Systemmentioning

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 Power Systemmentioning

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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“…3 respectively. The HVRT requirement in Australian grid code stipulates wind turbines to withstand an overvoltage of 1.3 pu for 60 ms after which HVRT margin ramps [9][10][11]. For LVRT, the permitted voltage levels are, 90% to 110% of normal voltage continuously, 80% to 90% of normal voltage for a period of at least 10 seconds and 70% to 80% of normal voltage for a period of at least 2 seconds [9].…”

Section: Itroductionmentioning

confidence: 99%

DFIG-based WECS fault ride through complying with Australian grid codes

Khamaira

Abu-Siada

Islam

2014

2014 Australasian Universities Power Engineering Conference (AUPEC)

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Doubly Fed Induction Generators (DFIGs) are widely used in variable speed wind turbine owing to its superior advantages that include ability to extract more energy from turbine, capability to control active and reactive power independently and the use of reduced converter rating that reduces its overall cost. On the other side fluctuating output power, weak fault ride through capability and high sensitivity to grid disturbances are the main issues that affect DFIG performance. In this paper, superconducting magnetic energy storage (SMES) unit is proposed to improve the fault ride through (FRT) capability of DFIG-based wind energy conversion system (WECS) during voltage sag and voltage swell events in the grid side. A new control approach for SMES unit using hysteresis current controller (HCC) along with proportional integral (PI) controller is introduced. Australian grid codes are used to examine the capability of the proposed controller to improve the FRT of the DFIG and hence maintaining the wind turbine connection to the grid during studied faults. Simulations results show the effectiveness of the SMES controller in maintaining system parameters within safety margins that comply with the Australian grid codes.

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“…The reactive current of the nominal current of STATCOM can be drawn Improved Ride -Through Control of DFIG During Grid Voltage Swell T IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS multiple times. In [24], a chopper circuit was added to suppress the DC voltage from rising caused by the reverse flow of the grid side converter during grid voltage swell. A series resistance has been added to the rotor side converter to suppress overcurrent, avoid losing control of the converter, continuously provide reactive power support, and reduce torque ripple during grid fault in [25].…”

Section: Introductionmentioning

confidence: 99%

Improved ride-through control of DFIG during grid voltage swell

Xie

Zhang

et al. 2014

IEEE Trans. Ind. Electron.

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Grid voltage swell causes transient DC flux component on doubly fed induction generator (DFIG) stator winding even stronger than grid voltage dip , resulting in a much more serious stator, rotor current, and torque oscillation. The current study analyzes the dynamic behavior of DFIG during gird voltage swell. Based on the analysis results, the virtual resistance control strategy manages best to suppress the rotor current and torque oscillation, but prolongs the transient duration, resulting in a higher rotor voltage. Thus, this study proposed a virtual impedance control strategy to enhance the high voltage ride-through capability of DFIG. In order to improve the dynamic performance, the optimization algorithm of virtual impedance is proposed in the paper. The effectiveness of the proposed control strategy was verified by simulation and experimental results. Index Terms-Wind power generator, doubly fed induction generator (DFIG), virtual impedance, high voltage ride-throughManuscript

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High voltage ride-through of DFIG-based wind turbines

Cited by 58 publications

References 2 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

DFIG-based WECS fault ride through complying with Australian grid codes

Improved ride-through control of DFIG during grid voltage swell

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