Method for Determining the Degree of Damage to the Stator Windings of an Induction Electric Motor with an Asymmetric Power System

A method is proposed for determining the number of damaged stator windings in presence an asymmetric power supply system induction electric motor based on Park vector hodograph. As a result experiments simulation model, it was found that with symmetry voltages and windings, hodograph describes circle; all other cases ellipse. It has been established asymmetry voltage indicated by angle inclination ellipse, indicator ellipticity. In order to identify conditions system, algorithm recalculating ellipse parameters condition proposed. Recalculation errors did not exceed 6%. dependence increment amplitudes phase angles currents turns winding linear. Based this fact, The results work can be used build systems diagnosing interturn short circuit built into drive.