PROJECT TITLE :

Power Quality Improved Bridgeless Converter Based Computer Power Supply - 2016

ABSTRACT:

Poor power quality, slow dynamic response, high device stress, harmonic rich, periodically dense, peaky, distorted input current are the most important problems that are frequently encountered in conventional switched mode power provides (SMPSs) employed in computers. To mitigate these problems, it's proposed here to use a nonisolated bridgeless buck-boost single-ended primary inductance converter (SEPIC) in discontinuous conduction mode at the front end of an SMPS. The bridgeless SEPIC at the front finish provides stiffly regulated output dc voltage even beneath frequent input voltage and cargo variations. The output of the front finish converter is connected to a [*fr1]-bridge dc-dc converter for isolation and also for getting totally different dc voltage levels at the load end that are needed in a very personal laptop. Controlling a single output voltage is ready to manage all the other dc output voltages still. The look and simulation of the proposed power supply are allotted for obtaining an improved power quality that's verified through the experimental results.