Photovoltaic power generation tracking controller based on digital signal processor

The invention discloses a photovoltaic power-generating maximal power tracking controlling device which is on the basis of digital signal processing device, the device comprises a direct current converter, a voltage and electric current detecting module, a controlling module and a driving and protecting module, wherein the input end of the direct current converter is connected with the output end of a solar battery array, the output end is connected with the input end of a grid-connected inverter through a direct current generatrix, the grid-connected inverter is connected with an electric net, the input end of the voltage and electric current detecting module is connected with the output end of the voltage and electric current detecting module, the output end of the voltage and electric current detecting module is connected with the input end of the controlling module, the output end the controlling module is connected with the input end of the driving and protecting module, and the output end of the driving and protecting module is connected with a grid electrode G of a isolated-gate bipolar field effect transistor of the direct current converter. The invention has the advantages of low cost, which is easy to popularize and use, reduces the difficulty of the system controlling realization, and increases controlling effect. The installation of the invention is flexible, maintenance is convenient, and the influence of a single branch road fault can be reduced in maximum limit.