Detection Of Stator Inter-turn Short Circuit In Three-Phase Induction Motor Using Current Coordinate Transformation

The article describes the method of detection of stator short circuit faults in three-phase asynchronous motor, which is based on coordinate transformation of current vector. According to statistics, 78% of the stator faults are an inter-turn short circuit, which happens due to the turn insulation destruction. In many cases, it leads to motor shutdown. The principles of diagnostic system development of the stator windings via current measurements are shown. The efficiency of proposed algorithms for stator short circuit faults detection was confirmed by the simulation results. Also motor with inter–turn short circuit was tested with help of laboratory test-bench.

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