Projeto de um retificador controlado aplicado a uma fonte ininterrupta de energia de dupla conversão monofásica sem transformador

Abstract

This work proposes a half-bridge rectifier, digitally Controlled, as the input stage of a single conversion, single-phase, transformerless UPS. The purpose is to maintain the rectifier and the DC discharge service, also making a correction of the power factor, in normal mode of operation of the system. Digital control and economic feasibility are basic project requirements. After a brief bibliographic review, the design calculations, simulations, implementation and, finally, the results of a small scale prototype test built in the premises of the Grupo de Eletrônica de Potência (GEPOC) of the Universidade Federal de Santa Maria (UFSM) are show