The Design And Realization Of DDS Multi-function Signal Generator Based On SOPC

The current world energy situation is very grim, the main reason is that the currently widely used petrochemical energy decreases ceaselessly, prices have been higher, and increased production costs. Coupled with increasingly obvious global warming, climate change anomalies in recent years, the voice of countries on the environmental protection is more and more, and they have introduced policies and measures of environmental protection. Countries have vigorously carry out renewable energy sources to replace the more polluting fossil energy on the environment. Solar is a good choice. The development of solar energy is the human to solve the energy problems inevitable road.This paper studies the domestic and foreign solar power technology, and developed a set of solar maximum power tracking of power system. The system uses the Cortex-M3kernel STM32series processor, embedded operating system uC/OS-II. The thesis mainly includes the following several aspects:First reading view and solar related content, analying the current domestic and world energy usage and the use of solar energy. Solar tracking is the breakthrough point, the overall analysis of the whole system’s difficulty design ideas. Accession to the MPPT maximum power detecting algorithm to improve the efficiency of energy conversion for the purpose, the system based on the embedded solar tracking has been designedSecond The STM32has been selected as main controller chip, uC/OS-II as the operating system, In this system, the basis of current and voltage detection circuit, DC/DC conversion circuit is built.The system use the STM32PWM output waveform to control DC/DC output, thereby control the solar panel power.Third The transplantation of uC/OS-II operating system to the STM32processor, programing to realize the multi task management system, can realize the automatic collection and calculating the optimum working point. The screen has a good man-machine interface, It can display the current operating point parameter, the user can change the parameter to adjustment system and optimum working point.