Design of solar PV automatic tracking control system based on ARM7 processor

An application bottleneck of photovoltaic power generation is low power efficiency. The application and development of photovoltaic power generation is restricted. Design of automatic tracking of photovoltaic power generation system is an important way to improve the efficiency of photovoltaic power generation. Automatic tracking system is helpful to make the sun rays as much as possible to the vertical incident in solar panels, making the panels maximize the solar radiation energy. According to practical engineering application, ARM7 processor as main control chip was adopted; photovoltaic automatic tracking control system and embedded PV MPPT control scheme were designed. The system consisted of solar tracker and two-dimensional plane bracket of controller, the altitude and azimuth angle of the sun was calculated through extracting the GPS data. The motor was driven by PWM speed regulating to adjust photovoltaic two-dimensional plane bracket. Then the automatic tracking of the sun was realized.The experimental results show that the utilization rate of solar energy could be effectively improved.