Design and Implementation of a DC Power Conversion Control System for Photovoltaic Power Generation Based on STM32

We produced a DC power conversion control system for photovoltaic power generation. The system uses the STM32 microcomputer as the control core and consists of the battery pack, INA282 voltage and current detection module, auxiliary power module, drive module, etc. The DC-DC converter 1 based on the buck chopper is used as MPPT (Maximum Power Point Tracking) solar controller to control the photovoltaic panel to work at the maximum power point. The DC-DC converter 2 composed of synchronous Boost-Buck circuit charges and discharges the battery to stabilize the output voltage. The efficiency of the total system reaches 96.5%.