Research On Two-Input Flyback DC-DC Converter

With the energy crisis broke out, traditional energy can't satisfy human's needs. Therefore, the exploitation of clean energy resources has attracted a great public attention on a worldwide scale, especially the solar array.This paper introduces the solar array briefly, then uses a voltage source and rheostat to simulate the solar sell's character, proposes a simple circuitry to realize the maximum power point tracker. In order to meet the requirement of the power system, this paper proposed a two input flyback converter using the solar array and commercial ac line to provide energy. And base on the paper analysis, a 48W converter is designed, the experimental results verify the effectiveness of the proposed approach.In order to increase the efficiency of the converter, this paper proposed a two input Quasi-Resonant flyback converter to realize the soft-switching. At last simulation results are provided to verify the theoretical analysis.All of the results demonstrate that the based on the solar array two-input flyback converter and Q-R flyback converter can couple with the other energies to supply the regulated output voltage for the load,and two-input flyback type converter is a important topology for solar array in small power system.