Model Predictive Control of an Active Front End Rectifier: Robustness Analysis

Abstract

This paper represents the robustness analysis of active front end rectifier by model predictive control. Over the year different mechanisms have been applied for controlling the active front end rectifier. In our paper, the rectifier has been designed and controlled without the need of PI controller. The model's robustness is analyzed by evaluating total harmonic distortion (THD), switching frequency and voltage deviation for various system conditions. The chosen method performs in a discrete periods and requires no external modulators. By applying dynamic references, it shows flexibility in power control. Real power source and voltage references are also provided without using extra control loop. Variation of total harmonic distortion, switching frequency and voltage has been analyzed and the system has been designed and investigated in MATLAB Simulink. Simulation findings indicate a faster and more appropriate determination of reactive power and dynamic voltage. The proposed method also have been analyzed for different load types to validate its efficacy. Practical implementation of this rectifier will be of interest in future.