Disturbance Rejection Control of Induction Motor for Slip Regulation

The induction motor is easily affected by external disturbances, parameter variations, and uncertain nonlinear ingredients. The paper presents an novel zero-order disturbance observer and disturbance rejection control based on slip regulation. The disturbance observer is based on slip control. The output of observer implements slip error for compensation. Simulation results verify the validity and feasibility of disturbance rejection control. The proposition has simple algorithm. It can solve the disadvantages of poor dynamic response and lower control precision in slip regulation, and has necessary to popularize the proposition in engineering.