Abstract
Large induction motors contain axial air ducts in their rotor body for cooling purposes. It has been noted lately that, the presence of the rotor air ducts affects the rotating magnetic field by introducing asymmetries. Those asymmetries produce higher harmonic content in the induction motor electromagnetic variables, same like the broken bar fault. So, the diagnostic procedure of a healthy motor with axial rotor air ducts could lead to a false broken bar fault alarm, which leads to unnecessary inspection cost, as well a significant cost because of the production process interruption for the motor inspection. In this paper, it is shown that the higher harmonic index of the electromagnetic torque can reliably be used to distinguish the healthy from the broken bar case reliably in induction motors with rotor axial air ducts.
Original language | English |
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Title of host publication | Proceedings - 2014 International Conference on Electrical Machines, ICEM 2014 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 1614-1620 |
Number of pages | 7 |
ISBN (Electronic) | 9781479943890 |
DOIs | |
Publication status | Published - 2014 Nov 17 |
Event | 21st International Conference on Electrical Machines, ICEM 2014 - Berlin, Germany Duration: 2014 Sept 2 → 2014 Sept 5 |
Publication series
Name | Proceedings - 2014 International Conference on Electrical Machines, ICEM 2014 |
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Other
Other | 21st International Conference on Electrical Machines, ICEM 2014 |
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Country/Territory | Germany |
City | Berlin |
Period | 14/9/2 → 14/9/5 |
Bibliographical note
Publisher Copyright:© 2014 IEEE.
Keywords
- Axial air ducts
- Broken bar
- Fault diagnosis
- Induction motor
- Torque spectrum
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Mechanical Engineering