Abstract
The stator-rotor-hybrid fault in squirrel cage induction motors, which means that rotor bar breaking fault and stator winding inter-turn short circuit fault occur simultaneously, has been investigated based on the motor multi-loop model. The results indicate that the features of rotor bar breaking fault and stator winding inter-turn short circuit fault always interlace and interact to some extent. The detection method, which is only suitable for single fault, may lead to a misinterpretation. In this paper, the stator-rotor-hybrid fault feature of rotor bar breaking and stator winding inter-turn short circuit has been summarized and the mutual relationship of the two types of fault has been disclosed by thoroughly analyzing the simulation and experiment results. As establishes an important theoretical foundation for joint detection of rotor bar breaking and stator winding inter-turn short circuit fault.
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