Design of rotor and stator converters for a Double Fed Induction Machine

The paper deals with a doubly fed induction machine (DFIM) supplied by two PWM voltages inverters. The authors impose a power distribution law between stator and rotor sides, and define the power converter designs. They justify that, in the same power conditions, the proposed DFIM speed drive is better then usual induction motor one. To design both inverters, two arguments are studied. The first one is electrical aspect which requires the maximum values of current and voltage from each inverter. The second one is thermal aspect linked to the heat stress of power components defined by the conduction and switching losses