The Research On One-Cycle Control For New Impedance Source PV Grid-connection Inverter

With the increasing scarcity of the world’s energy and environment pollution, search anew energy for sustainable development are countries urgent hope. Solar energy with its cleannon-polluting, inexhaustible advantages becomes the first choice of the country’s new energydevelopment, Countries have a strong development of photovoltaic industry, photovoltaicindustry has been developing rapidly in recent years.The production technology of photovoltaic panels and inverter design and controltechnology are the key technologies of solar photovoltaic, The former technology in recentyears been developed rapidly. At present, the inverter design and control technology becomesthe bottleneck restricting the photovoltaic industry. Design a safe and efficient inverter hasbecome an urgent demand to promote the photovoltaic industry. Make a more in-depth studyon the design and control of the inverter.Firstly, Compare the advantages and disadvantages of various topologies on the basis ofanalysis the works of various topologies, Draw a conclusion of the new impedance sourceinverter topology is a relatively good performance of topology. Secondly, Analyze many kindsof inverter control methods, do the simulation on various control methods, compare theadvantages and disadvantages of various control methods from the theoretical analysis andexperimental data. Thirdly, Analyze the principle of one-cycle control of photovoltaicgrid-connected system, Derivation of the one-cycle control equation and circuit. Lastly, didthe simulation experimental on one cycle control of photovoltaic grid system, the theoreticalanalysis is verified by simulation.