Dynamic Performance Improvement for High-Speed SRMs Using an Enhanced Linear Active Disturbance Rejection Control

For the purpose of improving the dynamic performance of high-speed switched reluctance motor (SRM), this article proposes an improved linear active disturbances rejection control (LADRC) based on an angle position control (APC) method. First, an improved LADRC with gain coefficient and the high-order derivative observation of disturbances is developed to accurately estimate time-varying differential disturbances. The tracking performance and stability of the improved LADRC are analyzed under different disturbances. Then the proposed control is applied to the drive system, and the average torque in the commutation interval is calculated using the instantaneous torque at the rotor control position to obtain the turnon angle in angle position control. Next, the rotor control position is discussed and the turnon angle calculation and the average back-electromotive force (EMF) compensation elements are introduced to improve the dynamic performance. Finally, the proposed LADRC are established and validated based on simulations and experiments for a 6/4-pole high-speed SRM.