Numeričko modeliranje i izrada prigušnice za programabilni trofazni kalibrator napona

master's thesis

• Title (english): Numerical modeling and fabrication of the choke for three-phase programmable voltage calibrator
• Author: Karlo Petrović
• Mentor: Martin Dadić (mentor)
• Committee member: Martin Dadić (predsjednik povjerenstva)
• Committee member: Željko Štih (član povjerenstva)
• Committee member: Bojan Trkulja (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2018-07-05, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Cilj je bio napraviti prigušnicu izlaznog filtra kalibratora, točno određenog induktiviteta iznosa 3,6 mH. Prvo se provodio analitički proračun magnetskog kruga, zatim se napravio 3D model prigušnice u MagNet-u, gdje su se radile simulacije i mijenjanjem broja zavoja se utjecalo na iznos induktiviteta. Poslije izvršenih simulacija se na osnovu odgovarajućeg broja namota namotala prigušnica na standardnu SU jezgru, prema standardu DIN 41309. Tada se prigušnica s jezgrom ponašala kao transformator u praznom hodu. Spojen je mjerni sustav za mjerenje induktiviteta prigušnice i bilo je potrebno odmotavati zavoje dok se ne dobije željena vrijednost induktiviteta koji se može koristiti u izlaznom filtru za uklanjanje viših harmonika napona.

Abstract (english)

The goal was to build a choke of output filter of the calibrator, whose inductance is specified exactly at 3,6 mH. After the analytical calculation of magnetic circuit was carried out, a 3D model of choke was made using MagNet, where the simulations were performed. Additionally, by changing the number of turns, the amount of inductance was influenced. After the simulations were completed, the choke was rolled up on standard SU core, according to standard DIN 41309, based on corresponding number of turns. Aterwards, the choke with a coil acted as a transformer in idle state. Eventually, it was created a measuring system in order to measure inductance of the choke and it was necessary to unwind turns until needed value of inductance was obtained, which can be used in output filter for removing higher voltage harmonics.

• Keywords: Prigušnica; Kalibrator; MagNet; Jezgra; Prazni hod transformatora; Zavoji; Induktivitet; Filtar
• Keywords (english): Choke; Calibrator; MagNet; Core; Idle state of transformer; Turns; Inductance; Filter
• Language: croatian
• URN:NBN: urn:nbn:hr:168:383841
• Study programme: Title: Electrical Engineering and Information Technology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije (magistar/magistra inženjer/inženjerka elektrotehnike i informacijske tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2019-03-13 23:56:21