The bidirectional DC-DC converter is researched for photovoltaic system
the topological structure of the main circuit is given
which is composed of synchronous rectifier Buck-Boost circuit
it owns independent control links. On this basis
working principle of main circuit and hardware circuit are analyzed. The hardware system of the converter based on STM32F334C8T6
the signal acquisition circuit and driving circuit are designed. The experimental results show that the output voltage is stable at about 12 V in Buck mode and the output voltage is stable at about 24 V in Boost mode