magistrsko delo
Jernej Erjavec (Author), Peter Kitak (Mentor), Jožef Ritonja (Co-mentor)

Abstract

Cilj magistrske naloge je numerična analiza segrevanja asinhronskega motorja in smiselnost uporabe le te. V teoretičnem delu magistrske naloge bo na kratko predstavljen asinhronski motor, opisane bodo osnovne zakonitosti toplotnega polja, predstavljena bo metoda končnih elementov, prikazana teorija zgradbe numeričnega modela v programskem paketu EleFAnT in na kratko predstavljen optimizacijski proces. V praktičnem delu bomo sestavili numerični model asinhronskega motorja s pomočjo metode končnih elementov, kjer bo potrebno upoštevati določene temperaturne lastnosti materiala. Glavni temperaturni lastnosti materialov sta toplotna prevodnost in toplotna prestopnost, ki jih običajno pridobimo iz tabel, kar pa lahko v veliki meri vpliva na natančnost končnih rezultatov, še posebej v primeru, če je za določen material podanih več vrednosti. Za zagotovitev verodostojnosti pridobljenih rezultatov in možnosti njihove uporabe za izračune temperature na ostalih primerih asinhronskih motorjev, bo potrebno numerični model umeriti. To bomo izvedli z uporabo optimizacijskega algoritma in s pomočjo rezultatov meritev na asinhronskem motorju, ki smo jih pridobili v Laboratoriju za električne stroje na Fakulteti za elektrotehniko, računalništvo in informatiko. V kolikor bo analiza pokazala, da je numerični model smiseln, bo to v prihodnosti velika pomoč pri načrtovanju novih asinhronskih motorjev, saj bomo lahko že pred fizično izdelavo poznali temperaturne spremembe. Vsa dela v zvezi z magistrsko nalogo so bila opravljena v Laboratoriju za osnove in teorijo v elektrotehniki na Fakulteti za elektrotehniko, računalništvo in informatiko v Mariboru.

Keywords

toplotna prevodnost;toplotna prestopnost;asinhronski motorji;optimizacija;metoda končnih elementov;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
Publisher: J. Erjavec
UDC: 621.313.33(043.2)
COBISS: 19702038 Link will open in a new window
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Downloads: 108
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Other data

Secondary language: English
Secondary title: CALCULATION OF TEMPERATURE DISTRIBUTION IN THREE-PHASE INDUCTION MOTOR BY USING FINITE ELEMENT METHOD
Secondary abstract: The objective of this master's thesis is a numerical analysis of induction motor and the possible benefits of its use. The theoretical part of this thesis contains the presentation of the induction motor, the basic principles of the thermal field and the description of finite elements method. These are followed by introducing the theory of the numeric model construction in the EleFAnT and finally, by the short presentation of the optimisation process. In the practical part, the numerical model of the of induction motor will be constructed with the help of the finite elements method. It will be necessary to take into consideration some temperature characteristics of the materials used. The main temperature characteristics are thermal conductivity and thermal transitivity, the values of which are usually taken from the tables. These values have a considerable influence on the final result accuracy, especially if there are more values associated with a certain material. In order to ensure the relevance of the obtained results and their applicability for the temperature calculation in other cases of the induction motors, the numerical model needs to be calibrated. The calibration will be carried out by using the optimisation algorithm and by using the results of the measurements performed on the of induction motor, which were acquired from the Electrical Machine Laboratory in The Faculty of Electrical Engineering and Computer Science. If the analysis confirms the applicability of the numerical model, this will serve as a great help for the induction motor construction in the future, as the information on temperature changes will be available even before the physical construction. All the tasks needed for this thesis were carried out in the Laboratory for Fundamentals and Theory in The Faculty of Electrical Engineering and Computer Science in Maribor.
Secondary keywords: themal conductivity;thermal transitivity;induction motor;optimisation;finite elements method;
URN: URN:SI:UM:
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Mariboru, Fak. za elektrotehniko, računalništvo in informatiko, Elektrotehnika
Pages: XIV, 63 f.
ID: 9150369