| Summary: | 碩士 === 明志科技大學 === 電機工程系碩士班 === 104 === This thesis presents the analysis and simulation of interleaved flyback converters for solar power conversion systems. In this system, an interleaved flyback converter combined with a single-phase, full-bridge, dc-to-ac power converter is proposed to increase solar power conversion efficiency. The interleaved flyback converter controlled by predicted current estimator is used to reduce current harmonic on input side connected with utility. The single-phase, dc-to-ac power converter is implemented by full-bridge topology to change output voltage polarity.
In this thesis, the mathematical models of interleaved flyback converters and single-phase, full-bridge, dc-to-ac power converter are built and simulated by Matlab/Simulink. The system can feed proper power to the grid in grid-connected operation, while for stand-alone operation, the rated output voltage is 110V and the frequency is 60Hz. Besides, the simulation data shows that the current harmonic distortion of single-phase, full-bridge, dc-to-ac power converter under 250W output in grid-connected operation is 1.14%.
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