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The present work of dissertation presents the study, the methodology of design and the practical implementation of a Full-Bridge inverter employed in an on-line type UPS system. The Boost SRZCS-ZVS-PWM converter, which is the input stage of the UPS system, has the advantage of integrating the functions of a pre-regulating converter with power factor correction (PFC) and a DCDC converter. In order to control the Full-bridge inverter, the the so-called open-loop bipolar modulation technique was used, which was implemented in the same DSP (Digital Signal Processor) used to perform the power factor correction of the above-mentioned input stage. The output voltage is pure sinusoidal, within the criteria established by IEC 63040-3. The experimental results are presented and corroborate with the theory exposed.

Projeto e análise de desempenho de um inversor full-bridge empregado em um sistema ups on-line com elevado fator de potência