Design and Implementation of PV Maximum Power Point Tracking Control

Photovoltaic Power generation system is an important renewable energy generation mode, in order to maximize the power generation efficiency of photovoltaic system, it is necessary to use Maximum Power Point Tracking (MPPT) technology. MPPT technology is designed to monitor the output voltage and current of the photovoltaic cell in real time, and adjust the operating point of the photovoltaic cell to make it work at the maximum power point. In this paper, the traditional disturbance observation method and variable step conductance increment method used in MPPT technology are modeled and compared, and it is concluded that the variable step conductance increment algorithm has high control accuracy, fast response speed and higher power generation efficiency in photovoltaic power generation. Secondly, based on the Arduino control chip, the hardware and software of the photovoltaic maximum power point tracking control circuit are designed, the hardware experiment platform of the photovoltaic power generation system is built, and the control algorithm of variable step length conductance increment method is realized in combination with programming. Finally, the performance of the variable step conductance increment algorithm in real environment is verified and evaluated. The test results are consistent with the simulation results, which further proves the superiority of variable step conductance increment method in practical application.