In this project a AC-DC converter has been proposed for DC voltage regulation which can be used for dc motor drive, battery charging applications, etc.

The conventional converter comprises two stages. The first stage is the diode bridge rectifier and the second stage is DC-DC buck converter.

The two stages are coupled by a dc-link capacitor which also eliminate the ripple present in the output of the rectifier.

The two stages are combined by increasing a Switch and decreasing number of diodes and eliminating the dc link capacitor.

A feedback control system, based on PWM technique, has been designed which regulates its load voltage. The simulation work is carried out using MATLAB/SIMULINK.

Block Diagram