| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 102 === In recent years, the rapid industrial development, drastic increase in resource consumption, additional impact of the energy crisis, and the Fukushima Daiichi nuclear disaster, have urged people to focus on the necessity of various alternative energy sources and renewable energy technologies. Traditional electrical grids remain vital because stable new energy sources are still lacking. Thus, because grid-tied systems have become the primary application of new energy systems, discussions on grid-tied control technology are crucial.
The objective of this study was to develop a single-phase boost-type forward converter to convert a storage battery voltage of 48 V to 200 V, providing energy to the DC-link side of a DC-AC converter. Additionally, a single-phase full-bridge DC-AC converter was used to connect to the grid side in parallel, transferring energy to the grid to supply loads. To conform to the liberalization of power industries in Taiwan and the contract capacities and unit electricity prices specified by power companies, power outputs to the grid side can be controlled based on electricity demands during various times.
This study used a high-performance digital signal processor (TMS320F28335) produced by Texas Instruments as the control core of the overall system. The control strategies for the system were completed using software programs, thus achieving digitized system control to reduce hardware circuitry usage and increase system reliability.
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