Results 21 to 30 of about 159,486 (302)

Influence of the HTS Winding Tape on Limiting the Transient Currents in Superconducting Transformers

open access: yesEnergies, 2022
The article presents an extended computer model of a HTS (high temperature superconducting) 21 MVA 70/10.5 kV transformer with severalfold compound windings, based on a verified PSpice model of 10 kVA transformer with single windings. Two superconducting
Paweł Surdacki, Łukasz Woźniak
doaj   +1 more source

Influence Mechanism and Suppression Control of the MMC on Short-Circuit Current Under AC Faults

open access: yesIEEE Access, 2020
Modular multilevel converter based high voltage direct current (MMC-HVDC) transmission systems may increase the short-circuit current and affect the AC fault clearing of circuit breakers.
Jian Yang   +3 more
doaj   +1 more source

Current sharing of parallel SiC MOSFETs under short circuit conditions [PDF]

open access: yes, 2021
Device-to-device parametric variations (e.g. threshold voltage V TH , gate resistance R G and junction temperature T J ) can cause variations in the short-circuit currents conducted through parallel-connected devices.
Wu, Ruizhu   +5 more
core   +1 more source

Equivalent modeling method of induction motor contribution to short-circuit current

open access: yesEnergy Reports, 2022
When a short-circuit fault occurs in the power grid, induction motors in the distribution network will contribute to the short-circuit current. Accurate short-circuit current calculation of the motors requires detailed modeling of distribution network ...
Yantao Zhang   +10 more
doaj   +1 more source

Phase shift of the current under a single-phase short-circuit in the stator winding of a turbogenerator with double winding per phase [PDF]

open access: yes, 2015
© 2015, Springer-Verlag Berlin Heidelberg. An equivalent model of a faulty turbogenerator under a single-phase short-circuit in the stator winding is presented.
Fja?kowski, Zbigniew, Nouri, Hassan
core   +1 more source

Research on the optimisation strategy of short-circuit current limitation based on quantum genetic algorithm

open access: yesThe Journal of Engineering, 2019
With the expansion of urban power grid, short-circuit current issue becomes more important. This study proposes an effective approach to optimise short-circuit current limiting measure configuration.
Jianlin Yang   +5 more
doaj   +1 more source

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

Anode and cathode arc root movement during contact opening at high current [PDF]

open access: yes, 1999
This paper presents experimental research into the behavior of short circuit break arcs ignited between opening contacts. The investigation is applied to arc chamber geometries commonly used in miniature circuit breakers (MCB).
Peter A. Jeffery   +3 more
core   +1 more source

Comparative Analysis of High-Voltage Power Line Models for Determining Short-Circuit Currents in Towers Earthing Systems

open access: yesEnergies, 2021
The article deals with the problems of single-phase short-circuit current distribution in overhead power lines. Short-circuit disturbances cause many negative phenomena in power networks.
Rafał Tarko   +3 more
doaj   +1 more source

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

open access: yes, 2013
The authors would like to thank the ADEME for the funding of the MHYGALE project.Multi-phase machines are known for their fault-tolerant capability. However, star-connected machines have no fault tolerance to inverter switch short-circuit fault.
NGUYEN, Ngac Ky   +10 more
core   +1 more source

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