Control of Induction Motor Drive based on ADRC and Inertia Estimation

This paper proposes an indirect field-oriented control (IFOC) system of induction motor using active disturbance rejection controller (ADRC). A reduced-order rotor flux observer is used to observe the rotor flux. With the help of extended state observer (ESO) and nonlinear state-error feedback (NLSEF), the unknown disturbances such as the load disturbance and unmodeled dynamics, can be estimated and compensated, which guarantees the robustness of IM drive. Furthermore, to simplify the parameter tuning process of ADRC, we adopt the bandwidth based optimization method and perform the inertia estimation using the periodical speed signal. Effective experimental results are included.