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Indukcijski grelec za taljenje aluminija
LAZAR, ROK (Author), Petkovšek, Marko (Mentor) More about this mentor... This link opens in a new window

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Abstract
Cilj diplomske naloge je bil izdelati napravo za brezkontaktno indukcijsko segrevanje oz. taljenje aluminija. V prvem delu diplomskega dela je predstavljen pomen indukcijskega segrevanja, njegove prednosti pred konvencionalnimi načini segrevanja, področja uporabe ter osnovni elektromagnetni pojavi, ki so ključni za razumevanje principa indukcijskega segrevanja električno prevodnih materialov. V drugem delu diplomske naloge so predstavljeni ključni sestavni deli indukcijskega grelca in njihovo delovanje. Poglavje opisuje prednosti in slabosti zaporednega in vzporednega LC nihajnega tokokroga ter za slednjega podaja tudi izračun komponent. Izhodišče za izračun komponent in dimenzije tuljave je določala grafitna posoda, v kateri se topi aluminij. Prav tako je predstavljeno delovanje vzporednega push-pull resonančnega vezja z LC nihajnim tokokrogom, ki z izmeničnim tokom vzbuja resonančno vezje. Za napajanje tega sem izdelal polnovalni usmernik s tiristorskim nastavljalnikom enosmerne napetosti in LC filtrom. V tretjem delu diplomske naloge so predstavljeni rezultati in postopek testiranja končnega izdelka.

Language:Slovenian
Keywords:indukcijsko segrevanje, vrtinčni tok, LC nihajni tokokrog, polnovalni usmernik, tiristorski nastavljalnik enosmerne napetosti, vezje krmilne elektronike, mikrokrmilnik, push-pull resonančno vezje, grafitna talilna posoda.
Work type:Bachelor thesis/paper (mb11)
Organization:FE - Faculty of Electrical Engineering
Year:2020
Views:268
Downloads:91
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Secondary language

Language:English
Title:Induction heater for aluminium melting
Abstract:
The aim of the diploma was to make a device for contactless induction heating and melting of aluminium. The first part of the diploma presents the importance of induction heating, its advantages over conventional heating methods, areas of application and basic electromagnetic phenomena that are crucial to understand the operating principles of induction heating of conductive materials. The second part of the diploma presents the key components of an induction heater and their operation. This chapter describes the advantages and disadvantages of serial and parallel LC oscillating circuit and provides the calculation of component values for the parallel LC oscillating circuit. The starting point for component calculations and dimensioning of the coil was determined by the graphite vessel (crucible) in which the aluminium is melted. The operation of the parallel push-pull resonant LC oscillating circuit that excites the resonant LC oscillating circuit is also presented. Full bridge rectifier with thyristor-controlled DC voltage and LC filter is in charge of powering this kind of circuit. The third part of the diploma presents the results and the testing process of the final product.

Keywords:induction heating, eddy currents, LC oscillating circuit, fullbridge rectifier, thyristor-controlled DC voltage, control circuit, microcontroller, resonant push-pull circuit, graphite crucible.

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