Sistema ininterrupto de energia de dupla conversão isolado de 6KVA

Abstract

This work presents the design, implementation and experimental results of a 6kVA dual conversion uninterrupt power supply (UPS) with isolated output. The system is composed by a full-bridge inverter using unipolar modulation switching strategy, a battery charger, a bypass circuit and a supervisory system. Improvement techniques were used, such as: DC level reduction in the transformer, transformer leakage inductance as filter component, leakage inductance reduction in the power PCI and paralleled IGBTs to achieve the required power. The design methodology and experimental results of an industrial prototype were presented to validate the theoretical analysis and confirm the system performance.