Results 21 to 30 of about 1,101,419 (336)

Critical Current Degradation in HTS Tapes for Superconducting Fault Current Limiter under Repeated Overcurrent

open access: yesApplied Sciences, 2023
Superconducting fault current limiters (SFCL) can be an alternative to conventional devices limiting short-circuit currents in power systems. SFCL use high-temperature superconducting tapes of the second generation (HTS 2G) in SFCL, which, after reaching
Sylwia Hajdasz   +5 more
doaj   +1 more source

Vectorized Calculation of Short Circuit Currents Considering Distributed Generation - An Open Source Implementation of IEC 60909 [PDF]

open access: yesIEEE PES Innovative Smart Grid Technologies Conference Europe, 2018
An important task in grid planning is to ensure that faults in the grid are detected and cut off without damage in any grid element. Calculating short circuit currents is therefore a vital grid analysis functionality for grid planning applications.
L. Thurner, M. Braun
semanticscholar   +1 more source

Impact of Inter-Turn Short Circuit in Excitation Windings on Magnetic Field and Stator Current of Synchronous Condenser under Unbalanced Voltage

open access: yesEnergies, 2023
Inter-turn short circuit in the excitation windings of synchronous condensers is a common fault that directly impacts their normal operation. However, current fault analysis and diagnosis of synchronous condensers primarily rely on voltage-balanced ...
Junqing Li   +5 more
doaj   +1 more source

Analytical Optimal Currents for Multiphase PMSMs Under Fault Conditions and Saturation [PDF]

open access: yes, 2014
An original analytical expression is presented in this paper to obtain optimal currents minimizing the copper losses of a multi-phase Permanent Magnet Synchronous Motor (PMSM) under fault conditions.
FLIELLER, Damien   +3 more
core   +5 more sources

Forces and Stresses in the Windings of a Superconducting Fault Current Limiter

open access: yesEnergies, 2022
This paper presents the design of a Superconducting Fault Current Limiter (SFCL) and calculation results of forces and stresses in the windings of a resistive fault current limiter.
Janusz Kozak
doaj   +1 more source

Fault-Tolerant Operation of an Open-End Winding Five-Phase PMSM Drive with Short-Circuit Inverter Fault [PDF]

open access: yes, 2015
Multi-phase machines are well-known for their fault tolerant capability. Star-connected multiphase machines have fault tolerance in open-circuit.
KESTELYN, Xavier   +3 more
core   +4 more sources

Improved equation to describe the induction motor currents during nearby three‐phase short‐circuits

open access: yesIET Electric Power Applications, 2023
This article shows an improved equation to describe the induction motor currents during a three‐phase short‐circuit near to motor terminals. The proposed equation considers three details which are not in the equation shown in the IEEE Std.
Elmer Sorrentino, Andres Vera
doaj   +1 more source

Validation Study of the Use of Matlab/Simulink Synchronous-Machine Block for Accurate Power-Plant Stability Studies [PDF]

open access: yes, 2014
This paper presents results of the validity study of the use of MATLAB/Simulink synchronous-machine block for power-system stability studies. Firstly, the waveforms of the theoretical synchronous-generator short-circuit currents are described. Thereafter,
Blánquez Delgado, Francisco   +3 more
core   +1 more source

Detection of Irregular Sheath Current Distribution for Diagnosis of Faults in Grounding Systems of Cross-Bonded Cables

open access: yesIEEE Access, 2023
Sheath currents in high voltage cable circuits have proven to be one of the most convenient indicators for assessing cable health. The sheath currents are regularly distributed with fluctuation in a certain range under normal conditions, while the ...
Gen Li   +5 more
doaj   +1 more source

Comparison between peak values of induction motor currents’ waveforms during nearby three‐phase short‐circuits and results from standardized calculations

open access: yesIET Generation, Transmission & Distribution, 2023
This article shows a comparison of peak values of measured and computed waveforms of induction motor currents during nearby three‐phase short circuits with the results from the standardized calculations of those currents.
Elmer Sorrentino, Andres Vera
doaj   +1 more source

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