Design and Realization of Three-Phase AC-DC Converter Based on STM32 Microcontroller

The system takes the three-phase rectifier filter circuit and the Buck-Boost circuit as the core, using the control chip STM32 to generate the PWM waveform for closed-loop feedback control, so as to realize the stabilized voltage output. This system maintains high stability output DC voltage even if the input AC voltage varies widely. Moreover, the regulation rate of voltage and load of this system is optimal, and it also has some special functions, such as over current protection and output power factor auto-calculation.