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Author: | Singh, Deepak |
Title: | Calorimetric Measurement of the Stator Core Losses Caused by Manufacturing |
Publication type: | Master's thesis |
Publication year: | 2011 |
Pages: | viii + 45 s. + liitt. 7 Language: eng |
Department/School: | Sähkötekniikan laitos |
Main subject: | Sähkömekaniikka (S-17) |
Supervisor: | Arkkio, Antero |
Instructor: | |
Electronic version URL: | http://urn.fi/URN:NBN:fi:aalto-201207022755 |
OEVS: | Electronic archive copy is available via Aalto Thesis Database.
Instructions Reading digital theses in the closed network of the Aalto University Harald Herlin Learning CentreIn the closed network of Learning Centre you can read digital and digitized theses not available in the open network. The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/ You can read theses on the Learning Centre customer computers, which are available on all floors.
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Location: | P1 Ark Aalto 1434 | Archive |
Keywords: | electrical machine core loss manufacturing effects calorimeter |
Abstract (eng): | This thesis is a part of the research on the effect of the manufacturing process on the core losses of the electrical machine. Within this thesis, a special test setup, that has same flux density distribution as the actual machine in no-load, is used to measure only the stator core loss. For this, a slip-ring rotor is designed and constructed. Furthermore, a modified calorimeter is constructed to accurately measure the stator core loss. In order to account only for the stator core loss, the test setup is excited from the stationary rotor which is also thermally isolated from the measurement chamber of the modified calorimeter. The experimental setup is then operated at various conditions to determine the range of operation having optimal accuracy. After that, the stator core losses at frequencies ranging from 300 Hz to 1 kHz and air-gap flux densities ranging from 0.3T to 0.4 T, are measured and compared with the results obtained from the FE simulation (FCSMEK). The measured result at almost all the frequencies and the air-gap flux densities is found to be approximately twice of that obtained from the FE simulation. Furthermore, the accuracy of measurement is acceptable for this comparison, but for future study, i.e. comparing the difference after the heat treatment, the level of inaccuracy is too high. Thus, few modifications are recommended. |
ED: | 2012-02-01 |
INSSI record number: 43903
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