Controller Design Approach for SVPWM-Regulated AC/DC Rectifier

Electric vehicles (EVs) are widely used all over the world and has been attracting increasing attention.The grid-connected AC/DC rectifier is one of the main parts in the EV battery charger.It can realize the power flow and meet the power quality requirements for grid.Therefore, a three-phase bidirectional grid-connected AC/DC converter is studied in this paper for batteries charging system.First, the configuration of the system is introduced and the mathematical model of the converter is built.Then, we present, for the AC/DC converter, the model simulation of Space Vector Pulse Width Modulation (SVPWM) for different use cases using Matlab/SIMULINK software.The objective of the proposed model is to stabilize the output voltage from a three phase system using a decoupling control strategy based on direct quadrature (d-q) frame method.The designed control scheme is tested for two cases of study.Simulation results show that the SVPWM control applied to the rectifier has an adequate performance and can ensure the control objectives effectively.