Research On Control Of Grid-Connected Photovoltaic Power Generation System

For the intense of the energy and the pollution problem, more and more attentinon was paid to the development of solar energy. Photovoltaic power generation is an important form to use the solar energy. With its development, Photovoltaic power generation has become an important issues for the researchers all over the world.Photovoltaic power generation in grid-connected operation is an important mode of operation to improve the Reliability economy and safety of power network. The control strategy of Photovoltaic (PV) grid Power system is researched in the paper. Then the technology an theory of Theoretical solar tracking control strategy solar array output control and photovoltaic (pv) grid inverter output control is discussed in detail.On the basic of the Photovoltaic power grid control reseach domestic and overseas, Membership functions, fuzzy reasoning, fuzzy language, the fuzzy rules principle model is proposed in the paper. And the result is simulated by MATLAB.Then, Photovoltaic (pv) grid inverter output control of sliding mode control method is proposed. the theory and the model is invested in detail. It is also tested by MATLAB.Finally, DSP based controller system is designed. The experiment is done to show the controller can be used to realize the grid-connected operation of Photovoltaic power generation.In all, through the theory anasis, MATLAB simulation and experiment the control method proposed in the paper is efficive and progressive. It provide an better throry method to anaysis the Photovoltaic (PV) grid Power system controller.