search query: @supervisor Arkkio, Antero / total: 80
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| Author: | Sundaria, Ravi |
| Title: | 3-D Eddy Current Modelling of Laminations to Study Edge Effects |
| Publication type: | Master's thesis |
| Publication year: | 2016 |
| Pages: | 48 s. + liitt. 6 Language: eng |
| Department/School: | Sähkötekniikan korkeakoulu |
| Main subject: | Electrical Drives (S3016) |
| Supervisor: | Arkkio, Antero |
| Instructor: | Rasilo, Paavo |
| Electronic version URL: | http://urn.fi/URN:NBN:fi:aalto-201603291528 |
| Location: | P1 Ark Aalto 3559 | Archive |
| Keywords: | eddy currents finite element method steel laminations edge effects electrical machines 3-D modelling |
| Abstract (eng): | This thesis deals with analysis of eddy current losses in steel laminations and shows comparative study of 1-D coupled 2-D loss model with 2-D coupled 3-D loss model. Primary objective of the thesis is to analyze the edge effects in eddy current loss modelling which are ignored in traditionally available 1-D coupled 2-D loss models. Two separate cases, one with homogeneous and second with non-homogeneous flux density distribution across lamination were analyzed. For 1-D homogeneous case eddy current loss model was simulated using MATLAB while in house software FCSMEK was utilized in calculating 2-D eddy current losses in non-homogeneous flux distribution in a salient pole synchronous machine rotor pole. Lamination thickness of 2 mm used in synchronous machine rotor at industrial level to reduce manufacturing costs may have high edge effects and necessitates the requirement to carry out this thesis work. 3-D models of laminations are made with the help of softwares COMSOL and GMSH and FEM calculations are performed in software ELMER. The boundary conditions of 3-D model were excited from field solution of respective 2-D model. As a result of this thesis considerable amount of deviation in eddy current losses has been observed specially at higher thicknesses of steel laminations and frequency of flux density in both homogeneous and non-homogeneous cases. |
| ED: | 2016-04-17 |
INSSI record number: 53340
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