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首页> 外文会议>2014 International Conference on Electrical Sciences and Technologies in Maghreb >Defects rotor identification by magnetic spectrum analyzing in a squirrel-cage asynchronous machine
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Defects rotor identification by magnetic spectrum analyzing in a squirrel-cage asynchronous machine

机译：鼠笼式异步电动机中通过电磁频谱分析识别转子的缺陷

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This work presented the diagnosis of several defects types of the rotor bars for squirrel-cage asynchronous machine. The geometry of the model in tow dimensional is presented it consist of two sub-domain: stator and rotor. The Maxwell equations describe the local behavior in time and space of magnetic quantity, there are equations will be represented the most commune from Maxwell-Faraday, Maxwell-Ampere and equation of magnetic flux density conservation. Calculation well be done in the case of a healthy and unhealthy machine. In the first, the fractures are supposed to one, two and three broken bars adjacent, in the last we well take three different states for unhealthy machine, symmetries spaced of two broken bars, three broken bars and four broken bars. The finite element model used for solving Maxwell's equations; in order to analyze the frequency spectrum of the magnetic flux density in the air gap. In fact, the influence of the number of broken bars adjacent and spaced on the functioning of the machine, and the influence of this last on the frequency spectrum will be studied.
机译：这项工作提出了鼠笼式异步电机转子棒几种缺陷类型的诊断方法。给出了模型的几何尺寸，它包含两个子域：定子和转子。麦克斯韦方程描述了磁在时间和空间上的局部行为，其中有麦克斯韦-法拉第方程，麦克斯韦-安培方程和磁通密度守恒方程代表的方程式最多。对于健康和不健康的机器，可以很好地进行计算。首先，将断裂假定为相邻的一个，两个和三个折断钢筋，最后，对于不健康的机器，我们采用三种不同的状态，即对称的间距为两个折断钢筋，三个折断钢筋和四个折断钢筋。用于求解麦克斯韦方程组的有限元模型；为了分析气隙中的磁通密度的频谱。实际上，将研究相邻和间隔开的断条的数量对机器功能的影响，以及这最后一个对频谱的影响。

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