The Research On Photovoltaic Inverter Based On TMS320F2812

For the development of global economy, the demands to energy are increasing day by day and the shortness of energy draws more attention than any time before. This condition gives great opptunity to the development of new energy, such as solar energy and wind energy. Power electronic technology, especially power swithing technology, gets popular in the utilization of new energy.The paper comes up with a full-package solution to convert solar power into AC. This solution is based on the design of the full-bridge converter and the full-bridge inverter. This paper first gives full analysis on the theories of power switching technology, inverter technology and PWM technology. And the theory and fulfillment of PID algorithm are discussed in this paper. Especially for this solution, this paper comes up with a PID algorithm in which two variables are being controlled in one close-loop.Then, this paper gives the procedure to calculate the main circuit parameters. The design of digital controlling circuit and assistant circuits, such as MOSFET driving circuit and voltage protection circuit, are introduced. Based on the parameters worked out, the paper gives the simulation of whole system in Matlab/Simulink. This paper also introduces the firmware design based on the DSP(TMS320F2812). The last is the verification of whole system including hardware and software by testing with load. The result shows the design of the system is effective.