Simulation and experimental research of asynchronous traction motor of the locomotive in case of emergency operation mode
Objective: Experimental research and Health assessment of asynchronous traction motors (ATED) for locomotives with a square-cage rotor. Methods: Hardware and software package as well as data analysis methods were applied for health monitoring and diagnostics of technical condition of ATED locomotives. Results: Rotor failures were studied in ATED with square-cage rotor and stator asymmetry. Oscillogram recording of ATED stator current was carried out under different emergency operation modes. Spectrum analysis of oscillograms showed variations of odd harmonic amplitudes. ATED rotor current spectra were presented demonstrated by a range of harmonic components which occur due to stator asymmetry at different frequencies. A model for evaluation of technical condition of ATED locomotives was designed. The feasibility of anticipatory diagnostics was justiﬁed as it allows for the detection of defects at the earliest stage of their development. Practical importance: The results of the conducted research may be used in the diagnostic system of ATED locomotives on a real time basis