Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Styrning av elektriska motorer
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.).
2010 (Swedish)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Electric Motor Control (English)
Abstract [sv]

Detta examensarbete har syftat till att undersöka utförbarheten om det är möjligt att skapa ett Scania ägt drivsteg där all kraftelektronik och all intelligens som idag ligger i de smarta sälldonen kombineras. Detta drivsteg kommer att monteras separat från elmotorerna. Målet med detta examensarbete är att studera vilka begränsningar som finns i form av kabellängd (mellan motor och drivsteg) och montering av motor (med eller utan hallgivare). En studie om alla de applikationer som sitter på drivlinan gjordes. EGR-ventilen (Exhaust gas recirculation) ansågs mest tillämpad för detta examensarbete och valdes som utgångspunkt. En elektrisk motor och drivsteg utsågs därefter med hjälp av specifikationerna från den valda applikationen. Ett antal sensorlösa metoder undersöktes och med kraven från den valda applikationen så ansågs några av dessa metoder mer lämpliga för EGR-ventilen. Dessa metoder var ‖flux-linkage‖, ‖state observers‖, ‖active probing‖ samt ‖modulated signal injection‖.Motor, drivsteg och kabelmodeller var skapade med Matlab Simulink. Simuleringarna skilde sig ifrån verkligheten pga. bristande kunskap om hur det köpta drivsteget styrde motorn.Mätningar gjordes på det verkliga systemet med olika kabellängder. Resultatet blev att motorstyrningen påverkades minimalt av kabellängder upp till 15 meter. Med kabellängder över 15 meter så uppkom avvikelser i positionsregleringen, dessa avvikelser orsakades med stor sannolikhet av störningar på hallgivarkablarna ifrån fasspänningskablarna.

Abstract [en]

This master thesis aims to investigate the possibility of a Scania owned drive where all power electronics and all the intelligence which today lies in the smart actuators are combined to a ―logic device‖. This Scania owned device will be mounted separately from the motors. The goal is to study what restrictions exist in terms of cable length (between the motor and the drive) and mounting of the motor (with or without commutation sensor). A study of which application from the driveline this thesis would be applied on was preformed and the exhaust gas recirculation valve was decided. An electrical motor and drive was then determined by the specifications of the chosen application. Sensorless methods were investigated and with the requirements of the chosen application, some of the methods seemed more suitable. These methods are to measure flux-linkage, use state observers, active probing and to inject modulated signals. The electrical motor, drive and cables were modeled with Matlab Simulink. The simulations differed from the reality due to lack of knowledge of how the purchased drive steered the motor. Measurements on the real system were made with different cable lengths. The result was that the motor control was hardly affected by cable lengths up to 15 meters. However, with cable lengths over 15 meter the position control got some abnormalities which most likely were caused by the interference of the hall sensor cables from the phase voltage cables.

Place, publisher, year, edition, pages
2010. , 88 p.
Series
MMK 2010:81 MDA 382
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-49587OAI: oai:DiVA.org:kth-49587DiVA: diva2:459842
Uppsok
Technology
Supervisors
Examiners
Available from: 2015-10-19 Created: 2011-11-28 Last updated: 2015-10-19Bibliographically approved

Open Access in DiVA

Electric Motor Control(2279 kB)136 downloads
File information
File name FULLTEXT01.pdfFile size 2279 kBChecksum SHA-512
e50d4b6936750db089d21277d079d5056fe1d9514ebb5d16e5973cb1461246598b699834673dd48e5cfcdabf41499b837dd6ba18c6a43495eac19f02ea6a24a6
Type fulltextMimetype application/pdf

By organisation
Machine Design (Dept.)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 136 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 155 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf