An Adaptive Active Disturbance Rejection Controller (ADRC) for Induction Motor Drives

The paper explores enhancing the torque response of the Induction Motor (IM) drive systems using Adaptive Active Disturbance Rejection Control (ADRC). The ADRC structure comprises three key components: the Tracking Differentiator (TD) for generating a smooth reference signal, the Extended State Observer (ESO) for estimating system states and disturbances, and Nonlinear State Error Feedback (NLSEF) for adjusting the output based on state errors. This approach allows ADRC to effectively manage nonlinear drive systems without requiring an exact model while improving resilience to disturbances and uncertainties. Performance improvements and reductions in torque pulsation are validated through MATLAB simulations.