ABSTRACT
Through the analysis of the basic principle of the three-phase VIENNA rectifier, the mathematical model under the d–q coordinate axis is established. This article then adopts a backstepping control strategy to control the DC voltage and the d–q axis voltage. On the one hand, it enhances the stability of the DC side output voltage; on the other hand, it realizes the rapidity of the grid side current and stability of control. In addition, a simplified algorithm based on two-level SVPWM is transplanted into the VIENNA rectifier. Finally, the simulation platform is built by MATLAB®/Simulink software to verify the rationality and effectiveness of the algorithm, so that the VIENNA rectifier control system has good stability and dynamic performance, and maintains a good control effect on the basis of adding disturbance.
