Distributed Power Generation Systems And Grid-connected Inverter,

As the new energy's applying in the distributed power system, more and more research of grid-connected inverter system have been attended. The following contents were summarized by the research and experiment which based on the grid-connected inverter controlled by voltage.In chapter one, the new energy in distributed power system was summarized. The standard of grid-connected inverter also been introduced.The topologies of grid-connected inverter system were all listed in chapter two. And the high frequency full-bridge inverter has been chosen as the main circuit structure. The model of grid-connected inverter was analyzed. Dead-time effect and load disturbing were pointed as the reason which causing the waveform distortion including.From chapter three can see because of the waveform correction, repetitive control technology was adopted, which is arising from the internal model principle. It can entirety eliminate the distortion of waveform after few period. Then all the control system was been given. At last the ways of keep synchronization was given by an example.Two new functions for grid-tied inverters of distributed power systems were mentioned in chapter four. Meanwhile some simulation results were presented.Different disturbing of the system can be found in chapter five. Also learn how to keep it out of system from the design of hardware and software.The chapter six was about the experiments of voltage controlled grid-connected inverter. The design of controlled circuits and experimental results were also presented.The summary and further research ideas would be given at the last chapter.