Disturbance Rejection Enhancement of Vector Controlled PMSM Using Second-order Nonlinear ADRC

The speed control system for the Permanent Magnet Synchronous Motor (PMSM) is designed by adopting active disturbance rejection control (ADRC) techniques. This design utilizes the output of the speed regulator, specifically, the input of the current regulator, to approximately substitute for the actual q-axis stator current. This paper has been used second-order linear (L) and nonlinear (NL) ADRC controller. Simulation results indicate that under this scheme, the closed-loop system can have a stronger anti-disturbance ability.