Predictive sliding mode controller design of induction motor

Nowadays, vector control and direct torque control (DTC) are popular for high performance drives. Even though these methods give better performance, the vector control needs reference frame transformation and direct torque gives large steady state ripples. To overcome these problems in the above method mentioned, this study presents an advanced vector control method for voltage source inverter (VSI) fed induction motor using sophisticated look-up tables. The proposed predictive sliding mode control method combines features of both indirect vector control and DTC. This approach gives faster torque response like the vector control methods and it also reduces ripples as in DTC method. A predictive sliding mode controller (PSMC) has been developed, designed as finite state automata (FSA), and implemented with field programmable gate array (FPGA). This new logic FPGA to torque and speed controller has been developed and analyzed, and experimentally verified.