Study of a Five-Level PWM Rectifier Fed DC Motor Drive

Abstract

A simulation of a five-level sinusoidal pulse width modulation (SPWM) rectifier fed D.C motor is proposed. The proposed topology of a five-level rectifier can be regulate the output voltage using (SPWM) to obtain variable speed of a D.C motor with constant load torque. The main advantages of the SPWM rectifier system are to drive a D.C motor with constant and variation load torque, low harmonic distortion in A.C supply side. The PID speed controller is used to make constant speed when load torque increase or decrease about 20% of rated value and to improve the dynamic response of the system. The five-level SPWM rectifier fed separately excited D.C motor are studied and simulated under the MATLAB/SIMULINK program.