Isolated three-phase rectifier with high power factor using the zeta converter in continuous conduction mode

This paper presents the analysis of an isolated three-phase rectifier with high power factor using a Zeta converter operating in continuous conduction mode. The structure is particularly simple and robust. Its main features a re one power processing stage (which can operate as step-down or step-up vo ltage), tower harmonic distortion of the input current, and natural isolati on. The converter works with constant frequency and pulsewidth modulation. The principle of operation, design procedure, and experimental results are presented.