Investigation of Common Mode Voltage problems in five-phase Induction Motor Drive

Abstract

Problem is problem until we investigate the problem. The main intent of this work is to investigate the effect of parasitic components in multi-phase induction machine, as neglecting those causes much deviation from the real-time behavior of high speed inverter fed induction motor drives especially wide band gap device based inverter fed induction motor drives. Comparative analysis is carried out for both inverter induction motor with and without parasitic components of induction motor. Simulation results reveal that there is much deviation in both voltages and currents of induction motor at various points of testing. Results reveal that peak currents in windings, bearing voltages, shaft voltages, bearing currents, and shaft currents are presented in case of induction motor drive with parasitic. Similarly, line currents with more high frequency harmonic content, increased peak currents, dv/dt and di/dt are more in inverter. Hence, it is crucial to know the exact behavior of induction motor while design the inverter for drive application to select the proper components.