Research And Design The Independent Solar Photovoltaic Power Generation Systems Based On DSP

Energy,it is the material basis for the continuous development of human society and it plays a vital role in the national economy.At the same time it is the main driving force to improve the people’s living standards. However, with the rapid development of economic globalization, the overall global energy consumption is increasing quckily.Solar energy as the most promising renewable energy, its development and use of development of human society is bound to make a great contribution.An independent photovoltaic power generation system is the study in this paper, it based on DSP control platform to designed a implement for a small independent photovoltaic power generation system.Firstly, the status of domestic and international PV and future prospects were introduced,and then analyzed the classification and components of the photovoltaic systems.Secondly,after the basic working principle and equivalent circuit analysis of photovoltaic cells to fully explain the principle of maximum power point tracking, combined with BOOST circuit common MPPT algorithm for the simulation.Finally, the ‘push-pull boost circuit combines full-bridge inverter’ design is be used.In the push-pull circuit is described in detail the various components of the selection parameters, the design of pre-control circuit, a voltage feedback circuit, high-frequency transformer, which uses PWM output drive circuit totem pole to enhance their driving ability;In the inverter circuit, the single-phase full-bridge configuration as the core of the main circuit, and also given the power switch and filter selection and design of the drive circuit, over-current protection circuit and an inverter sampling.In software design,to achieve a drive signal generating SPWM and PI closed-loop feedback control.To verify the results, produced a feasibility prototype power 500 W, the experimental results show that this scheme.