Design And Implementation Of A Efficient Tower Photovoltaic Grid-connected Inverter

Since entering the twenty-first century, increasing energy crisis has brought inconvenience to human production and life. Traditional non-renewable energy such as coal, oil and other fossil fuels has been faced with the plight of dried up. At the same time, fossil fuels brought serious pollution problem, which leads to a replacement between renewable and fossil energy. The new energy revolution will bring human society into a new field of energy. Renewable energy includes solar, wind, geothermal energy and so on, how to use them effectively has become an important direction of energy technology development and research. With the progress of science, the development of power electronic technology has been gradually perfect, which makes the modern inverter technology in this field of new low-carbon green energy further developed and used.This thesis expounds a design scheme of solar grid inverter based on space vector control technology, and has verified the experiment results. Solar grid inverter playing a role of bridge is a kind of interface device between solar cells and grid. Solar grid inverter can turn DC power generated by solar cells to AC which can be used by humans. In the solar energy grid generation system, solar grid inverter play an important role, which determines the quality characteristics of the output current and voltage.Firstly, this thesis introduces the present situation and development of solar grid inverter at home and abroad through in-depth investigation and practice. Combined with the actual needs in the process of research and development, this thesis designs the hardware platform and the main module control module based on TMS320F28335, and has experimental validation of the whole inverter.Secondly, this thesis studies the method of space vector modulation(SVPWM), analyzes the solar grid inverter with MATLAB/Simulink simulation software, and introduces ideas of software and implementation process in detail.Finally, this thesis sets up a software platform according to the main power topology and digital signal processing hardware control chip, completed on the system of hardware and software design and implementation. Then summary and analysis has been done by the experimental data. Results show that the design of solar grid inverter is feasible.