haku: @keyword rotating machinery method / yhteensä: 1
viite: 1 / 1
« edellinen | seuraava »
Tekijä: | Iruikwu, Daniel |
Työn nimi: | In Plane Numerical Analysis of Mechanical Stress in a Synchronous Reluctance Machine |
Julkaisutyyppi: | Diplomityö |
Julkaisuvuosi: | 2013 |
Sivut: | vii + 56 s. + liitt. 9 Kieli: eng |
Koulu/Laitos/Osasto: | Sähkötekniikan korkeakoulu |
Oppiaine: | Sähkömekaniikka (S-17) |
Valvoja: | Arkkio, Antero |
Ohjaaja: | Belahcen, Anouar |
Elektroninen julkaisu: | http://urn.fi/URN:NBN:fi:aalto-201403081548 |
OEVS: | Sähköinen arkistokappale on luettavissa Aalto Thesis Databasen kautta.
Ohje Digitaalisten opinnäytteiden lukeminen Aalto-yliopiston Harald Herlin -oppimiskeskuksen suljetussa verkossaOppimiskeskuksen suljetussa verkossa voi lukea sellaisia digitaalisia ja digitoituja opinnäytteitä, joille ei ole saatu julkaisulupaa avoimessa verkossa. Oppimiskeskuksen yhteystiedot ja aukioloajat: https://learningcentre.aalto.fi/fi/harald-herlin-oppimiskeskus/ Opinnäytteitä voi lukea Oppimiskeskuksen asiakaskoneilla, joita löytyy kaikista kerroksista.
Kirjautuminen asiakaskoneille
Opinnäytteen avaaminen
Opinnäytteen lukeminen
Opinnäytteen tulostus
|
Sijainti: | P1 Ark Aalto 1104 | Arkisto |
Avainsanat: | mechanical stress shrink fitting centrifugal force magnetic forces solid mechanics rotating machinery method FE-analysis weakly coupled |
Tiivistelmä (eng): | The distortion due to the mechanical stresses from manufacturing issues and the operation of electrical machines are known to have adverse effect on the magnetic properties of electrical iron core and due to the stress dependency of iron core losses, it is therefore imperative that we account for the stresses from the different conditions causing mechanical stresses in a rotating electrical machine. This work presents a 2-D FE-analysis of the mechanical stresses due to shrink fitting, centrifugal forces and the magnetic forces in a 4-pole, 3-phase synchronous reluctance machine at rated frequency of 50 Hz. The stresses due to shrink fitting and centrifugal forces were computed by solid mechanics method, while the stresses due to magnetic forces were computed using both magnetic field method and solid mechanics method. The total mechanical stress distributions from all stress sources were obtained using a weakly coupled approach. It was found that shrink fitting causes a very large tensile stress at the rotor core and compressive stress in most part of the stator yoke, but have almost no effect at the stator teeth. The centrifugal forces also contribute to the total tensile stress of the rotor core. The magnetic forces have the least effect on the total stress distribution of the machine. The combined stresses obtained are mostly tensile at the rotor core and compressive at most part of the stator yoke, while the stator teeth were under low tensile stress due to the magnetic forces. The presence of flux barriers between flux paths at the rotor core causes large stresses to distribute at the bridge between flux barriers near the fit interface. Increase or decrease of the radial interference and/or frequency increases or reduces the total mechanical stress distribution of the machine. |
ED: | 2014-03-17 |
INSSI tietueen numero: 48800
+ lisää koriin
« edellinen | seuraava »
INSSI