Control of separately excited DC motor using H-bridge

Abstract

In this project, we studied the control of DC motor by taking a previous model of the motor obtained last year and making some modifications, basically in having the possibility to change the sense of speed and also the possibility of braking. For that purpose, the main work was to calculate and realise three circuits: a PWM card controller based on UC3842A, an H-Bridge and its driver the IR2133 and a power supply mainly based on a full bridge AC-DC converter and a filter capacitor that feed the H-Bridge and the motor. We basely used the H-bridge that give us the aptitude to rotate the motor in the both direction and the braking also. The choice of the H-Bridge switching elements was made after calculations well specify in chapter two, where we arrived to choose the MOSFETs (IRFP350) among available transistors in the market