Power electronic rectifier transformer

The utility model relates to a power electronic rectifier transformer. Three-phase or single-phase alternating current is inputted to the power electronic rectifier transformer, and direct current is outputted by the power electronic rectifier transformer. Each phase at an input side is formed by connecting a plurality of same power units in series so as to meet the needs of different voltage grades, and output is parallel-connection output of all three-phase or single-phase modules. Each power unit module comprises four parts, namely a full-control rectification circuit in an input grade, a middle inversion circuit, a high-frequency transformer and a non-control rectification circuit in an output grade. The power electronic rectifier transformer can replace the traditional rectifier transformer and back-grade rectification device, has the characteristics of low cost and improvement on electric energy quality of a distribution network, and can be widely applied to the fields of electrochemical electrolysis, t