Isolated passive self-driven optocoupler three-phase synchronous rectifier circuit for synchronous transformer and method thereof

Disclosed are an isolated passive self-driven optocoupler three-phase synchronous rectifier circuit for a synchronous transformer and a method thereof, belonging to the field of rectifier circuits. The rectifier circuit comprises a three-phase synchronous rectifier circuit, an optocoupler isolation circuit, a synchronous transformer, an alternating current power supply and a load; the three-phasesynchronous rectifier circuit comprises MOS tubes Q1, Q2, Q3, Q4, Q5 and Q6; the synchronous transformer comprises a transformer T and a three-phase synchronous transformer M; the optocoupler isolation circuit comprises the same type of optocouplers D1, D2, D3, D4, D5 and D6; the output end of the alternating current power supply is connected to the synchronous transformer, the three-phase synchronous rectifier circuit and the optocoupler isolation circuit respectively, the synchronous transformer is connected to the optocoupler isolation circuit, the optocoupler isolation circuit is connectedto the three-phase synchr