Direct Control of a Three-Level Inverter-Fed Induction Motor Drive Using a Digital Signal Processor

This paper deals with the direct torque control (DTC) of a three inverted-fed induction motor. The switching of the enclosed power semiconductor devices in the three-level inverter uses Depenbrock's control strategy. Simulation and experimental results for a 1.8 kW induction drive are presented and discussed. A 16-bit fixed point digital signal processor (DSP), the Texas Instruments TMS320C25, has been used as the processor to realize the control strategy.