Research Article | OPEN ACCESS
A New Indicator for Rotor Asymmetries in Induction Machines Based on Line Neutral Voltage
1Khalid Dahi, 1Soumia El Hani, 2Said Guedira and 1Ilias Ouachtouk
1Electrical Engineering Research Laboratory, Mohammed V University in Rabat, 10110, Morocco
2National School of Mineral Industry, Rabat, 10110, Morocco
Research Journal of Applied Sciences, Engineering and Technology 2016 11:1136-1145
Received: January 19, 2016 | Accepted: March 1, 2016 | Published: June 05, 2016
Abstract
Induction Machines (IMs) are the most used electric machines in various industrial applications. An improved approach is proposed in this study for rotor asymmetry detection in IM using the line neutral voltage; this method is based on the analysis of the potential difference between the null point of the supply voltage system and the neutral of the star connection of IM stator winding; fault detection in this study is based on monitoring of the standard deviation calculations taken on two frequency ranges where are located the most sensitive harmonics to the occurrence of rotor asymmetry. The proposed method can be a helpful tool to the decision making without need any reference, which represent its main advantage compared to other fault indicators. The effectiveness of the developed indicator is demonstrated on IM test bench with rotor asymmetry.
Keywords:
Diagnosis, induction machine, line neutral voltage, rotor asymmetry,
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Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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