Continuous Nonlinear Model Predictive Current Control of PWM AC/DC Rectifier

Imad Merzouk, Noureddine Bessous, Mohamed Mounir Rezaoui, Mohamed Elbar, Khansa Bdirina


The present work applies a nonlinear model predictive current control (NLMPCC) approach to ac/dc pulse width modulation (PWM) rectifier. A cascade structure is used to regulate Dc-link voltage and grid currents. The outer loop objective is to regulate the Dc-link voltage to the desired value, providing the level of the required active power to be used with the reactive power to calculate the referencing current for the inner loop. In the inner loop, the proposed approach is considered. After that, the nonlinear model of the converter is developed, based on continuous minimization of predicted tracking errors, the voltage at the terminal of the converter is deduced. After that, a PWM block is used to generate gate signals. Simulation results are performed to illustrate the efficiency of the proposed control law


AC/DC PWM rectifier; Active and reactive power; Nonlinear predictive control; Taylor approximation; Continuous minimization

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