Turn‐to‐turn fault monitoring methods in electrical power transformers—State of the art
Sign Up to like & getrecommendations! Published in 2018 at "International Transactions on Electrical Energy Systems"
DOI: 10.1002/etep.2644
Abstract: List of symbols and abbreviations: CT, Cu Negative Sequence; OLTC, On‐Load Tap‐Cha Sequence Component; SC, Search Coil; SFRA Symbols: N1, Primary winding turns number ZPos, Positive sequence impedance; VNeg, Ne Transformer turn ratio; iz, Short… read more here.
Keywords: turn turn; methods electrical; monitoring methods; turn fault ... See more keywords
Effect of the Cu stabilisation layer on the turn-to-turn contact resistance of a non-insulated REBCO winding
Sign Up to like & getrecommendations! Published in 2021 at "Physica C: Superconductivity and its Applications"
DOI: 10.1016/j.physc.2021.1353949
Abstract: Abstract Although all the commercial REBCO tapes claim the stabilizer layer is pure Cu, the turn-to-turn contact resistance of coils wound from conductors sourced from different manufacturers may have a difference of more than an… read more here.
Keywords: contact resistance; turn turn; layer; effect stabilisation ... See more keywords
Extended second central moment approach to detect turn‐to‐turn faults in power transformers
Sign Up to like & getrecommendations! Published in 2019 at "IET Electric Power Applications"
DOI: 10.1049/iet-epa.2018.5689
Abstract: This study describes an extended approach to the differential protection of power transformers to identify turn-to-turn faults based on the second central moment (SCM). The proposal uses the differential currents as the input signals to… read more here.
Keywords: turn; second central; power; turn turn ... See more keywords
Visual map and instruction-based bicycle navigation: a comparison of effects on behaviour
Sign Up to like & getrecommendations! Published in 2017 at "Ergonomics"
DOI: 10.1080/00140139.2017.1282628
Abstract: Abstract Cycling with a classic paper map was compared with navigating with a moving map displayed on a smartphone, and with auditory, and visual turn-by-turn route guidance. Spatial skills were found to be related to… read more here.
Keywords: navigation; paper map; map; turn turn ... See more keywords
Study of contact resistivity of a no-insulation superconducting coil
Sign Up to like & getrecommendations! Published in 2020 at "Superconductor Science and Technology"
DOI: 10.1088/1361-6668/abd14d
Abstract: Previous studies of test coils have demonstrated the high thermal and electrical stability of no-insulation (NI) high temperature superconducting (HTS) coils thanks to the presence of turn-to-turn current paths. These turn-to-turn current paths in a… read more here.
Keywords: resistivity; turn turn; insulation; contact resistivity ... See more keywords
Modeling and Detection of Turn-to-Turn Faults in Shunt Reactors
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2021.3138967
Abstract: In this paper, the analysis and simulation of shunt reactor turn-to-turn faults, as well as the algorithms for their detection, are presented. A simple equivalent circuit of a shunt reactor applicable for a small number… read more here.
Keywords: turn faults; turn; turn turn; modeling detection ... See more keywords
A Flux-Based Differential Technique for Turn-to-Turn Fault Detection and Defective Region Identification in Line-Connected and Inverter-Fed Induction Motors
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Energy Conversion"
DOI: 10.1109/tec.2018.2837389
Abstract: A new air-gap flux-based technique is proposed in this paper for turn-to-turn fault (TTF) detection and defective region identification, which is implemented in line-connected and inverter-fed induction motors. Some search coils (SCs) are used to… read more here.
Keywords: technique; detection; turn turn; turn fault ... See more keywords
Turn to Turn Fault Detection, Discrimination, and Faulty Region Identification in the Stator and Rotor Windings of Synchronous Machines Based on the Rotational Magnetic Field Distortion
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Energy Conversion"
DOI: 10.1109/tec.2019.2951528
Abstract: A flux-based technique is proposed for the on-line detection, localization and discrimination of stator and rotor turn-to-turn faults in synchronous generators, using the measured air-gap rotational magnetic field. Simple magnetic field sensors (MFSs) are installed… read more here.
Keywords: magnetic field; stator rotor; turn turn; stator ... See more keywords
Mechanisms of Asymmetrical Turn-On and Turn-Off and the Origin of Dynamic CGD Hysteresis for Hard-Switching Superjunction MOSFETs
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Electron Devices"
DOI: 10.1109/ted.2020.2989741
Abstract: The dV / dt in superjunction metal–oxide–semiconductor field-effect transistors (MOSFETs) during the turn-off transient has been shown to be higher than during the turn-on, which can be attributed to a shorter Miller plateau. In this… read more here.
Keywords: turn; tex math; asymmetrical turn; hysteresis ... See more keywords
Numerical Analysis of Turn-to-Turn Short Circuit Current Mitigation for Concentrated Winding Permanent Magnet Machines With Series and Parallel Connected Windings
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2019.2956399
Abstract: Due to its high power density, the fractional slot concentrated winding permanent magnet synchronous machine (PMSM) is a competitive candidate for the aircraft starter generator (SG) system. However, the short circuit (SC) fault, especially the… read more here.
Keywords: permanent magnet; turn turn; concentrated winding; mitigation ... See more keywords
Online Sensitive Turn-to-Turn Fault Detection in Power Transformers
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2022.3140504
Abstract: Power transformers are of the most critical and expensive equipment in the power system industry. Meanwhile, they are exposed to a variety of faulty and abnormal operating conditions. Therefore, to prevent extension of these events… read more here.
Keywords: power transformers; turn; fault detection; turn turn ... See more keywords