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Title:DOLOČANJE MAGNETNIH LASTNOSTI JEDER DIFERENČNIH TRANSFORMATORJEV
Authors:ID Kovač, Tadej (Author)
ID Hamler, Anton (Mentor) More about this mentor... New window
Files:.pdf MAG_Kovac_Tadej_2016.pdf (2,92 MB)
MD5: 3AFCE78F16C328A9076C26E96C5F0882
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V magistrski nalogi so obravnavani mehko magnetni materiali, ki se uporabljajo za izdelavo jeder diferenčnih transformatorjev pri zaščitnih stikalih na diferenčni tok, in postopki za določanje magnetnih lastnosti jeder. Opisani so sestavi in zlitine, kristalne strukture, postopki izdelave in ocene svetovne porabe mehko magnetnih materialov. Predstavljeni so danes razpoložljivi specialni mehko magnetni materiali, ki so primerni za izdelavo jeder diferenčnih transformatorjev zaščitnih stikal. Ti materiali morajo imeti ekstremno ozko histerezno zanko, ki mora biti hkrati čim bolj linearna v širokem področju in mora imeti čim višjo gostoto magnetnega pretoka nasičenja. Od zaščitnih stikal na diferenčni tok se danes zahteva čim večja zanesljivost delovanja, delovanje pri čim nižji vrednosti diferenčnega toka in čim manjša prostornina ter seveda sprejemljiva cena. Za zagotovitev prvih treh zahtev je potrebno jedrom diferenčnih transformatorjev pred vgradnjo preveriti magnetne lastnosti. V Laboratoriju za aplikativno elektromagnetiko smo izvedli meritve magnetnih lastnosti po dveh metodah na večjem številu različnih vzorcev jeder. Na osnovi pridobljenih rezultatov smo analizirali magnetne lastnosti jeder in tudi primernost uporabljenih merilnih metod.
Keywords:magnetne lastnosti, mehko magnetni materiali, diferenčni transformator
Place of publishing:[Maribor
Publisher:T. Kovač
Year of publishing:2016
PID:20.500.12556/DKUM-58646 New window
UDC:621.314.22.08(043.2)
COBISS.SI-ID:19605782 New window
NUK URN:URN:SI:UM:DK:ORTODQGL
Publication date in DKUM:25.05.2016
Views:2217
Downloads:231
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Secondary language

Language:English
Title:DETERMINATING MAGNETIC PROPERTIES OF CORES OF DIFFERENTIAL TRANSFORMERS
Abstract:In the dissertation we investigated soft magnetic materials which are used for manufacturing transformer cores in circuit breakers on residual current and current methods for determining the magnetic properties of our cores. It describes the composition and alloys, crystal structures, manufacturing processes and includes an assessment of the global consumption of soft magnetic materials. Special soft magnetic materials, wich are suitable for the production of the transformer cores for circuit breakers, are investigated. These materials must have an extremely narrow hysteresis loop, which must at the same time be linear over a wide range and have as high a magnetic flux density as possible. Nowadays, circuit breakers on residual current require great operational reliability, operating at the lowest possible value of residual current and a small volume at a reasonable price. To ensure the first three requirements it is necessary to verify transformer core magnetic properties before the installation. In the laboratory of Applied Electromagnetics, we performed measurements of the magnetic properties using two methods on a large number of different samples. Based on the obtained results, we analyzed magnetic properties of our transformer cores as well as the appropriateness of the measurement methods.
Keywords:magnetic properties, soft magnetic materials, differential transformer


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