Results 281 to 290 of about 272,304 (330)
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OVERVOLTAGE AT THE TRANSFORMER WHEN DISCONNECTING CLOSE ASYMMETRICAL SHORT CIRCUITS
This article examines overvoltages at the inputs of high-voltage (HV) and low-voltage (LV) transformers rated at 110/6 kV and 110/10 kV, focusing on scenarios involving grounded and isolated neutrals during short circuits near the transformers. The study finds that with an isolated neutral, overvoltages resulting from a phase-to-ground short circuit ...Mufidzade, Nahid, Gulgaz Ismayilova
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Physical Review Letters, 2020
The compositional changes in shear bands of a Cu_{50}Zr_{50} metallic glass after plastic deformation at room temperature have been monitored by atom probe tomography. Across the width of the shear bands an asymmetry of the enriched and depleted zones of
M. Chellali, S. Nandam, H. Hahn
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The compositional changes in shear bands of a Cu_{50}Zr_{50} metallic glass after plastic deformation at room temperature have been monitored by atom probe tomography. Across the width of the shear bands an asymmetry of the enriched and depleted zones of
M. Chellali, S. Nandam, H. Hahn
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Wind farms: modeling for short circuit studies and protections' adjustments criteria
15th International Conference on Developments in Power System Protection (DPSP 2020), 2020The paper presents and analyzes the sequential diagrams required to represent the various types of windmills, including type III and IV, for which fault behavior is dictated by the AC-AC converter controls.
E. C. Senger, F.A. Reis Filho
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IEEE Transactions on Electron Devices
This study offers an in-depth analysis of failure mechanisms and degradation patterns in the state-of-the-art commercial 1.2-kV SiC trench MOSFETs subjected to repetitive short-circuit (RSC) stress.
Hengyu Yu +7 more
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This study offers an in-depth analysis of failure mechanisms and degradation patterns in the state-of-the-art commercial 1.2-kV SiC trench MOSFETs subjected to repetitive short-circuit (RSC) stress.
Hengyu Yu +7 more
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Online Short-Circuit Fault Detector of the Induction Motor Winding Based on MRAS Technique
IEEE transactions on industrial electronics (1982. Print)This article proposes a new method to diagnose intern-turn short-circuit (ITSC) faults in the stator winding of an induction motor (IM). The ITSC faults change stator winding resistance values, which can be estimated in real time using a model reference ...
I. Benlaloui +4 more
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Journal of Microcomputer Applications, 1988
Abstract The fact that a loss of symmetry in the stator currents of a generator produces a second harmonic component in the field circuit is used in the reported work to detect all asymmetrical faults on the stator side, including inter-turn short-circuits.
H.K. Verma, S.S. Chhajta
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Abstract The fact that a loss of symmetry in the stator currents of a generator produces a second harmonic component in the field circuit is used in the reported work to detect all asymmetrical faults on the stator side, including inter-turn short-circuits.
H.K. Verma, S.S. Chhajta
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A Novel SiC Trench MOSFET with Unilateral Deep P Buried Layer for Improved Short-circuit Capability
2024 IEEE 2nd International Conference on Power Science and Technology (ICPST)A novel silicon carbide (SiC) trench MOSFET with unilateral deep P buried layer (UP-MOS) for improved short-circuit performance is proposed and characterized in this article. The unilateral deep P buried layer not only increases the difficulty of carrier
Yangyang Wu +7 more
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International Conference on Electrical Machines and Systems, 2019
In order to solve the SiC MOSFETs application problems including asymmetric gate voltage, low threshold voltage, lower short circuit withstand time, higher voltage and current transient rate (dv/dt, di/dt) at switching, this paper proposes a novel SiC ...
Hao Zhou +3 more
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In order to solve the SiC MOSFETs application problems including asymmetric gate voltage, low threshold voltage, lower short circuit withstand time, higher voltage and current transient rate (dv/dt, di/dt) at switching, this paper proposes a novel SiC ...
Hao Zhou +3 more
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Study on the Short-Circuit Current of Asymmetrical AC Fault Near MMC
2022 International Conference on Power Energy Systems and Applications (ICoPESA), 2022Wei Lin, Yi Lin, Yuxin Yan, Chongru Liu
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2019 6th International Conference on Soft Computing & Machine Intelligence (ISCMI), 2019
Asymmetrical three-phase short circuit faults occur more often than symmetrical three-phase short circuits faults. The asymmetrical three-phase short circuit faults can be line-to-line faults, double line-to-earth faults or line-to-earth faults. Symmetric components technique and computer methods like time-domain fault analysis as well as quasi steady ...
Chikomborero Shambare +2 more
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Asymmetrical three-phase short circuit faults occur more often than symmetrical three-phase short circuits faults. The asymmetrical three-phase short circuit faults can be line-to-line faults, double line-to-earth faults or line-to-earth faults. Symmetric components technique and computer methods like time-domain fault analysis as well as quasi steady ...
Chikomborero Shambare +2 more
openaire +1 more source