Research of Hybrid Rectifier with LCL Filter

In order to restrain the current ripple in grid side of hybrid rectifier and the obvious current distortion caused by the current mutation in grid side of Vienna rectifier, an improved method that replace the L filter in gird side of Vienna rectifier and single switch three-phase boost rectifier (SSTPBR) with LCL filter is proposed in this paper. Passivity-based controllers of Vienna rectifier and SSTPBR with LCL filter are built separately. A comparative performance between traditional and improved hybrid rectifier is carried out according to simulation, which verifies the correction and advance of improved hybrid rectifier with LCL filter.