Real time performance investigation of an intelligent controller based speed control of induction motor drives

The paper presents development and implementation of a wavelet based multi-resolution proportional integral derivative (MRPID) controller for speed control of an indirect field-oriented induction motor drive under system uncertainties. The proposed wavelet controller is based on multi-resolution decomposition of the speed error signal between command and actual speeds. The proposed MRPID speed controller generates the torque control signal for the induction motor (IM) drive using the wavelet-transformed coefficients of speed error. The proposed MRPID controller for the IM drives is implemented in real-time using the ds1102 digital signal processor (DSP) board. The performances of the proposed wavelet controller based IM drive system are compared with conventional PI and PID speed controllers based IM drive systems. The performances of the MRPID controller are found faster and more robust than conventional speed controllers.