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DESIGN THE 3KW DC- AC INVERTER USING IN SOLAR ENERGY SYSTEMS

In a solar energy system, the DC-AC inverter has the very importance role to supply the energy for AC loads. In this paper, we would like to introduce the design of DC-AC inverter with 3KW for individual home. The inverter uses the DC-DC Boost converter with 400V output and the H- Bridge DC- AC with 220Voutput. In general, the output of solar cell swings from 150V to 400V, and the Boost DC-DC uses IC UCC2818 working at 20,9khz frequency and fix the output voltage around 400VDC. SPWM method is used to create a signal to control the H-bridge and produce the 220VAC output voltage with 50Hz frequency. The results simulation showed that the input and output are well adapted for the demand of the design.

Từ khóa: AC-DC inverter, Boost converter, H-bridge DC-AC, LCL filter

6 p ovanketv4 29/06/2017 433 4

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