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In this paper a method for the broken rotor bar fault detection of induction squirrel cage machines is presented. This method is based on measurements and frequency analysis of the sum of the stator phase currents (the stator circular current) for delta connected windings. For the case of the star connected windings the stator neutral point voltage is measured and analyzed. A model of squirrel cage...
Various phenomena can deteriorate the performance of induction motors and cause potential safety hazards. This can be harmful for the respective applications. Deficiencies like unbalanced voltages due to an unbalance in the power grid or harmonics in the voltage source could result in problems like excessive losses, over-voltages, mechanical oscillations, and interference with control electronics...
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