Real time implementation of backstepping controller in indirect field oriented control of induction motor drive

A novel structure of backstepping control has been proposed for indirect field oriented control of induction motor drive. Voltage and current signals are usually contaminated with high frequency switching noises due to SVPWM inverter. The proposed structure avoids real time integration and its associated drift problems, which in practice are the source of generation of unwanted noise. These problems are typical in the PI controllers used in conventional indirect vector control for speed and current regulation. By using the proposed backstepping controller, the system has a good load disturbance rejection capability, fast dynamic response and less parameters sensitivity. The effectiveness of this proposed control structure is verified by simulation as well as by experiment under critical operating conditions.