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Study and simulation model of power distribution system for military vehicles
KTH, School of Electrical Engineering and Computer Science (EECS).
2024 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Studie och simuleringsmodell av kraft- distributionssystem till militära fordon (Swedish)
Abstract [en]

This thesis was performed on behalf of the department of Architecture and Design at BAE Systems Hägglunds. The thesis deals with the task of making a simulation model of the power distribution system for military vehicles. The aim of the thesis is to design in Matlab/Simulink a general vehicle-based electrical system consisting of control system, LiFePO4 battery and alternator. The method used in this work is reminiscent of a waterfall model with following phases: Problem Analysis, Facts, and Implementation. Great emphasis has been placed on facts gathering for a better understanding of how the final model may be- have depending on parameter settings or component selection, which will contribute to simplifying future studies and development in this area. The report starts with a current situation analysis about the electrical system in CV90 (Combat Vehicle 90, tracked combat vehicle), battery market, governing military standards for lithium batteries and which batteries are approved for use as start- groups. Thereafter, facts gathering regarding lithium batteries, supercapacitors, mil- itary standards and CANbus. Lastly, the design of the simulation model will be pre- sented as well as the results based on state of charge, temperature, and other im- portant parameters.

Abstract [sv]

Examensuppgiften är utförd på uppdrag av avdelning Arkitektur och Design på BAE Systems Hägglunds. Examensarbetet behandlar uppgiften att skapa en simuleringsmodell av kraftdistri- butionssystem till militära fordon. Målet med examensarbetet är att designa i Mat- lab/Simulink ett generellt fordonsbaserat el-system bestående av kontrollsystem, LiFePO4-batteri och förbrukare samt att analysera detta för att få bättre förståelse för installationen. Metoden som användes i det här arbetet påminner om vattenfallsmodellen med föl- jande faser: problemanalys, faktainsamling och genomförande. Stor vikt har lagts vid faktainsamling för ökad förståelse för hur den slutgiltiga modellen kan komma att bete sig beroende på parameterinställning/komponentval, vilket resulterar i att framtida studier och utveckling inom det här området kan underlättas. Rapporten börjar med en nulägesanalys över elsystemet i CV90 (Combat Vehicle 90, bandgående stridsfordon), batterimarknaden, rådande militära standarder för liti- umbatterier och godkända batterier som startgrupper. Därefter faktainsamling gäl- lande litiumbatterier, superkondensatorer, militära standarder och CANbus. Slutli- gen presenteras utformningen av simuleringsmodellen och resultatet baserat på “State of charge”, temperatur och andra viktiga parametrar.

Place, publisher, year, edition, pages
2024. , p. 66
Series
TRITA-EECS-EX ; 2024:822
Keywords [en]
BAE Systems, military vehicles, CV90, MATLAB/Simulink, lithium batteries, super- capacitors.
Keywords [sv]
BAE Systems, militära fordon, CV90, Matlab/Simulink, litiumbatterier, superkon- densator.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-360328OAI: oai:DiVA.org:kth-360328DiVA, id: diva2:1940018
Supervisors
Examiners
Available from: 2025-02-27 Created: 2025-02-25 Last updated: 2025-02-27Bibliographically approved

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