Online Ups Circuit Pspice Realization

0n--1ine UPS, with the function of stabi1izing the voltage and thefrequency, fi 1tering and resi sting the interact ion, has been extensive1y usedin every fie1d of the nationa1 production, especia11y for the computer system.In this paper, PSP1CE, a kind of simu1ation software, is used to simu1ate thewho1e circuit of UPS, imp1ementing each part of UPS in practice. The papersimu1ates every possib1e scheme of each tache of the lJPS to compare theiradvantages with disadvantages, and it also gives a detai1 ana1ysis of these1ection and influence of the parameter. A simp1e and app1ied charge circuitis designed, which app1 ies IGBT (a power e1ement) to rea1ize the high frequencyof the system. In addition, the c1ose--1oop cofltro1 part is devised, u1timate1ygetting the pure sine wave with high rate of voltage use and 1ow distortionof harmonic wave. This paper provides both theoretica1 and practica1 referencefor designing UPS by simu1ation software.