Luenberger Disturbance Observer Based Model Predictive Current Control for Vienna Rectifier Combined with Super-Twisting Sliding Mode Voltage Control

Because Vienna rectifier has the advantages of simple structure and high work efficiency, it is widely used in communication power supply, motor drive, wind power generation and other field. In order to improve robustness and dynamic tracking performance of Vienna rectifier, this article proposes a model predictive current control (MPCC) method combined with super-twisting sliding mode control (STSM). To achieve higher robustness under parameter mismatch and load perturbation, a Luenberger disturbance observer (LDO) is designed in MPCC to estimate and compensate the disturbances. To further enhance the control performance of voltage loop, a STSM control strategy is adopted. The simulation results validate the better dynamic tracking performance and strong robustness in Vienna rectifier compared with conventional methods.