Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/F6BE7FB4-6C33-4FCD-8282-06C28F5E18D7 | ||
| Year | 2024 | ||
| Type of Item | Diploma Work | ||
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| Bibliographic Citation | Panagiotis Liotsis, "Investigation on the electromagnetic variables' harmonic behaviour of induction motors under rotor faults", Diploma Work, School of Electrical and Computer Engineering, Technical University of Crete, Chania, Greece, 2024 https://doi.org/10.26233/heallink.tuc.100389 | ||
| Appears in Collections |
The present thesis aims at analysing the current, stray flux and torque harmonics of a 4kW squirrel cage induction motor when operating on full load and under various levels of broken rotor bar faults.Firstly there’s an introduction to the induction motors, the different kinds of fault they can present as well as the various methods used to diagnose them. Following that, a deeper analysis is made on the broken rotor bar fault coupled with the diagnostic methods commonly used to tackle it. Next there’s a mention of the finite element method, on which the motor’s simulation is based on, in addition to the presentation of the motor’s characteristics in the way they are modelled using SimCenter Magnet.On the main part of the thesis, an electromagnetic analysis of the machine, both in a healthy and faulty state is displayed, as well as most importantly the presentation of the results of the use of diagnostic methods, which are based on the monitoring of the motors’ current, stray flux and torque, both in the steady state and startup.In closing, with all of the above, a conclusion is drawn on the effectiveness of each diagnostic method, per fault level, so they can be used accordingly and a fatal escalation of the fault to be prevented.
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