Direct digital control of induction motor currents

Consider the principles which form the basis of a digital controller for i_Sa and i_Sb (the two independent components of the actual three phase currents), with fixed sampling period and illustrates the operation of the controller with simulation results. Practical implementation of the method is in progress on a low-power transistor-inverter induction motor drive using as a controller a 68000 microprocessor augmented by a TMS32010 digital signal processor. Some practical results are presented