Mixed signal simulation in the field of adjustable speed drives.
The paper deals with the main problems to solve in order to simulate precisely the behavior of complex power systems with mixed elements (power components and digital regulation devices). The main features of an efficient simulation tool are described. They are focused on modern adjustable speed drives. Finally, the simulation of an industrial application of an induction motor fed by a three-level inverter tuned with a DTC (Direct Torque Control) is presented in details.