Results 11 to 20 of about 1,055 (260)
Active fault tolerant control for twin wind turbine subject to asymmetric fault [PDF]
2021 International Conference on Control, Automation and Diagnosis (ICCAD), 2021 This paper addresses the problem of control of a twin wind turbine which is subject to an electrical fault affecting only one stator phase of one turbine. An active fault tolerant control is proposed. The performance and robustness of the proposed control, comparing to a passive fault tolerant one developed in the literature, are shown through ...
Mariem Makni +5 more
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Assessing Asymmetric Fault-Tolerant Software [PDF]
2010 IEEE 21st International Symposium on Software Reliability Engineering, 2010 The most popular forms of fault tolerance against design faults use "asymmetric" architectures in which a "primary" part performs the computation and a "secondary" part is in charge of detecting errors and performing some kind of error processing and recovery. In contrast, the most studied forms of software fault tolerance are "symmetric" ones, e.g.
Peter T. Popov, Lorenzo Strigini
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Fault Current Characteristics of the DFIG under Asymmetrical Fault Conditions [PDF]
Energies, 2015 During non-severe fault conditions, crowbar protection is not activated and the rotor windings of a doubly-fed induction generator (DFIG) are excited by the AC/DC/AC converter. Meanwhile, under asymmetrical fault conditions, the electrical variables oscillate at twice the grid frequency in synchronous dq frame.
Xiao, Fan, Zhang, Zhe, Yin, Xianggen
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Improved DFIG capability during asymmetrical grid faults [PDF]
IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015 In the wind power application, different asymmetrical types of the grid fault can be categorized after the Y/d transformer, and the positive and negative components of a single-phase fault, phase-to-phase fault, and two-phase fault can be summarized.
Dao Zhou, Frede Blaabjerg
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Analytical Model of Induction Machines with Multiple Cage Faults Using the Winding Tensor Approach
Sensors, 2021 Induction machines (IMs) are one of the main sources of mechanical power in many industrial processes, especially squirrel cage IMs (SCIMs), due to their robustness and reliability.
Javier Martinez-Roman +5 more
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Identification and location method of asymmetric faults in coal mine power network
Gong-kuang zidonghua, 2018 Three asymmetrical faults of singe-phase grounding, singe-phase line breakage and ferroresonance in coal mine power network are easily misjudged, and existing methods hardly identify the three faults correctly.
WANG Qingliang, QIN Jie, LIU Xinru
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Synchronization method for grid integrated battery storage systems during asymmetrical grid faults [PDF]
Serbian Journal of Electrical Engineering, 2017 This paper aims at presenting a robust and reliable synchronization method for battery storage systems during asymmetrical grid faults. For this purpose, a Matlab/Simulink based model for testing of the power electronic interface between the ...
Popadić Bane +4 more
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Fault coordination control for converter-interfaced sources compatible with differential protection during asymmetrical faults [PDF]
Energy Reports, 2022 Converter-interfaced renewable energy sources (CIRESs) may have a different fault current angle with synchronous generators (SGs), so the large angle difference on both sides will cause low sensitivity or failure for traditional proportional braking differential protection. So as to cope with this issue, a new fault control strategy is put forward.
Zhe Yang +3 more
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Structural Study of Judaida Subsurface Structure, North of Iraq
Iraqi Geological Journal, 2022 This research focuses on the structural study of three folded horizons of Fat'ha, Jeribe, and the Euphrates in Judaida structure, Northern Iraq. Depth contour maps for three horizons using the time and velocity data called from seismic surveys.
Omar A. Naji +2 more
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Synchronous Power Control of Grid-Connected Power Converters under Asymmetrical Grid Fault
Energies, 2017 Control of grid-connected power converters is continuously developing to meet the grid codes, according to which the generation units should keep connected to the grid and further provide ancillary services, such as voltage and frequency support ...
Weiyi Zhang +3 more
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