Voltage Oriented Control of three phase PWM Converters

Abstract

This thesis presents a comprehensive study on the design and implementation of a voltage-oriented control strategy for a three-phase PWM rectifier. The control strategy is designed to achieve unity power factor and maintain the DC-bus voltage at the desired level, improving the control performance of the rectifier. The proposed control scheme has been founded on the transformation between stationary and synchronously rotating coordinate system, it is based on decoupled current controller designed along with a Pulse Width Modulation consisting of a current controller and a DC-link voltage controller. The proposed scheme has been implemented and simulated in MATLAB/Simulink environment, the results obtained show the validity of the model and its control methods compared with other strategies.