Design of uncertainty observation for speed sensorless control system of permanent magnet synchronous motor
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https://doi.org/10.54939/1859-1043.j.mst.FEE.2023.84-91Keywords:
PMSM; FOC; Backstepping; SMO; Matlab; Simulink.Abstract
This article presents anti-interference for the permanent magnet synchronous motor (PMSM) speed control system by the rotor flux quasi (FOC) method using the Backstepping controller. The SMO observer (Sliding-mode observer) estimates the value of the electromotive force in the stator coordinate system and then passes through a phase-locked loop (PLL) to calculate the speed, rotor position, reaction, and feedback to the controller. In addition, the uncertainty components caused by load torque and parameter variations also significantly affect rate and current deviations, causing the controller not to achieve the desired results. The paper's main contribution is the noise observer and the engine's uncertain components, which help significantly improve the system's quality. Finally, perform the simulation on Matlab/Simulink software and evaluate the results.
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