Abstract: As a three-level Boost AC/DC converter with unidirectional energy flow，the VIENNA rectifier is

widely used in electric vehicle charging systems and other occasions. The key to improve the power quality and the

system reliability is the quality of control strategy. Therefore，the control strategy of the VIENNA rectifier has

become a hot topic for scholars. The VIENNA rectifier are mainly divided into three aspects：the current control，the DC voltage control，and the midpoint potential balance control. And the control strategies of VIENNA rectifiers

were classified and summarized based on the three aspects. The principles，advantages and disadvantages of the

various control strategies were analyzed to provide reference for the research and engineering application of VIENNA rectifiers.

    Key words: VIENNA rectifier；current control；DC voltage control；midpoint potential balance control