PI type decoupling control scheme for high speed operation of induction motors

In the high-speed operation of a vector controlled induction motor, decoupling current control is a very important problem. However, the conventional decoupling scheme does not perform well when there are mismatches in the motor parameters. The authors propose a PI type decoupling current controller. A great advantage of this PI type decoupling controller is its robustness to motor parameter errors. Hence, the proposed scheme appears suitable for practical applications where the exact parameters are unknown. Through simulation results, the authors show that the proposed controller achieves the desired performances.