Complete design for a 1,2 kVA UPS, with sinusoidal output stabilized, operating with digital control for DSC (digital signal controller)

摘要

This paper presents a UPS topology formed by a rectifier, a fly-back converter that serves to keep the batteries charged, two Forward converters operating in parallel lagged by 180° that feed the inverter in the absence of commercial network 260 V and with a full bridge inverter circuit. The resultant power is 1200 W, with a pulse frequency of 25 kHz, the control, signs and protections are implemented in digital form through a digital signal controller (DSC). It presented a comprehensive analysis of the stages of operation and the design procedures for the correct operation of this topology. Simulation results, corresponding to the full functioning of the circuit, are presented to validate the system analysis.