Method for determination of a section with hidden damage in three-phase windings of electrical machines

A method for determination of a section with hidden damage in three-phase windings of electric machines equipped with a ring measuring transducer (RMT) for protection against turn-to-turn short circuits is considered. Shorted turns in the diagnosed section are determined by the appearance of EMF in the RMT. The proposed method allows simplifying and increasing of the reliability of diagnostics, reducing the equipment used, and perform car repairs by cutting out the damaged section from the stator winding. Keywords electric machine, three-phase windings, hidden damages, ring measuring transducer, electromagnetic inductor [email protected], [email protected], [email protected]