Višeciljno optimiranje električnog vučnog motora za natjecanje Formula Student temeljeno na metamodeliranju

master's thesis

• Title (english): Multi-objective Optimization of Electrical Traction Motor for Formula Student Competition based on metamodeling
• Author: Mario Volarić
• Mentor: Stjepan Stipetić (mentor)
• Committee member: Stjepan Stipetić (predsjednik povjerenstva)
• Committee member: Damir Žarko (član povjerenstva)
• Committee member: Zlatko Hanić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Electrical Engineering and Computing; Zagreb
• Defense date and country: 2021-07-07, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Electrical Engineering

Abstract

Kroz ovaj rad predstavljen je novi pristup dizajnu sinkronih motora s trajnim magnetima. Motori su posebno dizajnirani za uporabu na vozilu za formula student natjecanje. Trkaća staza i pravilnik postavili su ciljeve i ograničenja dizajna što je rezultiralo dvama glavnim ciljevima: veća učinkovitost radnog ciklusa i manja masa. Opisane su procedure dizajna motora MARKAM. Faktori poput popunjenosti utora bakrom ili ispuna statorskog i rotorskog paketa te dimenzije poput visine glave namotaja dobivene se od potencijalnog proizvođača, time osiguravajući da simulirani modeli budu što precizniji. U vrijeme pisanja ovog diplomskog rada motor je već bio u procesu proizvodnje. Izvršena je optimizacija za nekoliko različitih topologija s obzirom na postavljenje ciljeve i područje dizajniranja. Dana je teoretska podloga procesa koji se odvijaju u alatu za optimizaciju, uključujući mjere kvalitete i algoritme za optimizaciju i uzorkovanje. Pristup optimiranju preko metamodela korišten je kako bi se iskoristio puni potencijal alata. Postupak tijeka rješavanja opisan je i objašnjen zajedno s protokom podataka unutar optiSLanga koji se koristi kroz optimizacije. Da bi se postigla takva integracija, Motor-CAD je povezan s optiSLangom kao generalni solver, a Matlab ili Python skripta korištene su za definiranje procesa. Komunikacija između njih postiže se ActiveX protokolom. Sveukupno su ispitivane četiri različite topologije u višeciljnoj i jednociljnoj analizi. Ispitano je ponašanje koncentriranog i raspodijeljenog namota. Analizirane su različite topologije rotora, uključujući V, VI i Spoke oblik magneta. Opisane su performanse stroja i ukupni rezultati. Jedan model se istaknuo svojim performansama i sveukupno dobrim karakteristikama za primjenu u bolidu. Na kraju, detaljno ispitivanje ponašanja motora provedeno je MKE elektromagnetskim izračunima i proračunom termalnih performansi.

Abstract (english)

In this paper, a new approach to the design of synchronous motors with permanent magnets is presented. The motors are specifically designed for use in formula student cars. The race track and rulebook have imposed design goals and constraints that lead to two main objectives: higher duty cycle efficiency and lower mass. The manual design of the motor MARKAM engine is described. Factors such as copper slot fill and stack fill and dimensions such as end-winding height are obtained from the potential manufacturer to ensure that the simulated models are as accurate as possible. At the time of writing, the motor was already in the manufacturing process. Optimization was performed for a variety of different topologies with respect to well-defined objectives and design spaces. The theoretical background of the computational process behind the optimization tool is given, including quality measures and both optimization and sampling algorithms. A metamodel-based approach has been used to leverage full optimization possibilities. Solver run workflow is described and explained along with the optiSLang workflow used by the optimizations. To achieve such workflow, Motor- CAD is connected with optiSLang as solver and Matlab or Python script as process definition tool. The communication between them is achieved using ActiveX protocol. In total, four different topologies were investigated in both multi-target and single-target analysis. Concentrated and distributed winding were investigated. Different rotor topologies including V, VI and spoke shaped magnets were analyzed. Machine performance and overall results were studied. Through the analysis, one model stood out with its performance and overall good characteristics for formula cars. Finally, a detailed study of the machine behavior through electromagnetic FEM calculations and thermal evaluation was conducted.

• Keywords: Optimizacija; Metamodeliranje; Evolucijski Algoritam; Parametarska Analiza; Trajni Magneti; Formula Student; Motor-CAD; MARKAM; Sinkroni Motor; optiSLang
• Keywords (english): Optimization; Metamodeling; Evolutionary Algorithm; Sensitivity; Permanent Magnet; Formula Student; Motor-CAD; MARKAM; Synchronous motor; optiSLang
• Language: english
• URN:NBN: urn:nbn:hr:168:078046
• 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: 2023-01-13 16:28:17