Poenostavljeni MKE izračun temperature sestavnih delov elektromotorja

magistrsko delo magistrskega študijskega programa II. stopnje Strojništvo

Arlena Šulin (Author), Nikolaj Mole (Mentor)

Abstract

V procesu pridobivanja projekta je potrebno s potencialnim kupcem doreči zahtevane karakteristike elektromotorja. V začetnih fazah projekta se ustreznost dizajna elektromotorja preverja z računalniškimi simulacijami na osnovi numeričnega modela, zasnovanega na metodi končih elementov. Namen preračunov je pospešiti komunikacijo s kupcem pred izvedbo testiranj, ki so zamudna in dražja. Elektromotor za mehansko servo krmiljenje je obremenjen s temperaturnimi cikli; upornost navitja se spreminja v skladu s temperaturo navitja. V skladu s specifikacijo kupca nas zanimajo temperature tuljave, statorskega zoba, ležajev, ohišja in ponora toplote na pokrovu elektromotorja. Cilj magistrske naloge je skrajšati računski čas simulacij preko poenostavitve geometrije elektromotorja ob maksimalnem odstopanju izračunanih temperatur od merjenih temperatur za največ 10 %. Z uporabo računalniških simulacij smo izračunali temperature sestavnih delov elektromotorja v primeru, ko je obravnavan elektromotor predstavljen z geometrijskim, dvanajstinskim trodimenzionalnim ter dvodimenzionalnim radialnim geometrijskim modelom. Maksimalen gradient temperature je opažen v radialni smeri. Izračunane temperature komponent smo primerjali z meritvami temperatur komponent elektromotorja.

Keywords

magistrske naloge;elektromotorji;volanski manever;generacija toplote;numerične simulacije;poenostavitev numeričnega modela;temperature sestavnih delov;

Data

Language:	Slovenian
Year of publishing:	2024
Typology:	2.09 - Master's Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[A. Šulin]
UDC:	621.313.13:52-535.7:52-17(043.2)
COBISS:	191777539
Views:	39
Downloads:	21
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Simplified FEM computation of temperature in components of an electric motor
Secondary abstract:	In the process of obtaining the project, it is necessary to reach an agreement with potential buyers regarding the required electric motor characteristics. In the initial stages of the project, the suitability of electric motor design is verified by use of numerical simulations, based on finite element method. The purpose of numerical computing is to replace expensive and time-consuming testing. The electrical power steering motor (EPS) is subjected to temperature cycles while winding resistance changes according to motor temperature. According to the specification of the customer, coil, stator tooth, bearing, housing, and heat sink temperatures need to be obtained. The goal of the master's thesis is to optimize the computing time of numerical simulations by simplifying motor geometry and reducing the degrees of freedom while the calculated temperatures of motor components must be within 10% regarding measured temperatures. Using numerical simulations electric motor component temperatures were calculated when the electric motor is represented by threedimensional, 1/12 of three-dimensional and two-dimensional model. The maximum temperature gradient was observed in the radial direction. Maximum temperature deviation is observed in the case of the two-dimensional model as a result of model simplification.
Secondary keywords:	master thesis;electric motors;steering maneuver;heat generation;numerical simulations;numerical model simplification;temperatures of motor components;
Type (COBISS):	Master's thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. Ljubljana, Fak. za strojništvo
Pages:	XX, 54 str.
ID:	23306925