CALCULATION OF MACHINE WINDING ELECTRICAL PARAMETERS AT HIGH-FREQUENCIES FOR SWITCHING TRANSIENT STUDIES

This paper describes a multiconductor transmission line approach for c alculating the machine winding electrical parameters for switching tra nsient studies. The technique is based upon the solution of the one di mension diffusion equation in the slot of electrical machines. The coi l electrical parameters are calculated considering both the magnetic f lux in the iron and in the air. Several practical formulations for cal culating the winding electrical parameter are proposed which take into account the machine winding design characteristics. The computer mode ls are validated by a comparison of measured and calculated results in two high voltage induction motors.