Determining the single-phase ground fault currents in the stator winding of an induction motor

摘要

An approach to mathematical modeling of single-phase short-circuit conditions of the stator winding of an induction motor connected to a power network with the grounded or isolated neutral. The approach is based on the mathematical model of a machine with phase coordinates. The differential equations of the machine have coefficients in the form of harmonic functions; they are written for line-to-line voltages using the loop current method The approach proposed enables the short-circuit currents occurring under arbitrary operating conditions of an induction motor to be easily modeled and accurately simulated.