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Permanentmagnetiserad synkronmaskin med reducerad koggningsvridmoment
University West, Department of Engineering Science.
University West, Department of Engineering Science.
2023 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
PM machine with reduced cogging torque (English)
Abstract [sv]

GKN Aerospace har börjat titta mer på att elektrifiera jetmotorerna med hjälp av en permanentmagnetiserad synkronmaskin som inte genererar för mycket koggningsvridmoment, cogging torque. Denna avhandling undersöker fenomenet koggningsvridmoment inom en permanentmagnetiserad synkronmaskin. Koggningvridmoment är en periodisk momentfenomen som uppstår från interaktionen mellan permanentmagneterna inom rotorn och statortänderna. Det kan orsaka vibrationer, buller och energiförluster som påverkar maskinens prestanda och effektivitet, särskilt vid låga hastigheter. Arbetet började med en teoretisk bakgrund för att ge en grund som använder fysikens principer för att belysa de underliggande mekanismerna i en permanentmagnetiserad synkronmaskin innan man går in på det specifika fenomenet koggningvridmoment. Samtidigt som simuleringarna genomfördes så gjordes också en litteraturstudie om olika tillvägagångssätt som ansågs bäst lämpade för att behålla de givna parametrarna under simuleringarna utan att påverka maskinens effektivitet.

Abstract [en]

GKN aerospace has started to look more into electrifying the jet engines by using a permanent magnetized synchronous machine that does not generate too much cogging torque. This thesis investigates the cogging torque phenomenon within a Permanent Magnet Synchronous Machine. Cogging torque is a periodic torque component that arises from the interaction between the permanent magnets within the rotor and the stator teeth. It can cause vibrations, noise and energy losses which affects the machine’s performance and efficiency, especially at low speed. The work started with a theoretical background to provide a foundation that employs principles of physics to elucidate the underlying mechanisms of Permanent Magnet Synchronous Machine before delving into the specific phenomenon of cogging torque. Simultaneously as the simulations, a literature study was also conducted regarding different approaches seen to best suited design to keep the given parameters during the simulations without affecting the efficiency of the machine.

Place, publisher, year, edition, pages
2023. , p. 33
Keywords [sv]
synkronmaskin, koggningsvridmoment
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hv:diva-20233Local ID: EXE512OAI: oai:DiVA.org:hv-20233DiVA, id: diva2:1776017
Subject / course
Electrotechnology
Educational program
Elektroingenjör Fordon
Supervisors
Examiners
Available from: 2023-06-27 Created: 2023-06-27 Last updated: 2023-06-27Bibliographically approved

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