Vienna rectifier optimization modulation method and device, terminal and medium

The invention discloses a Vienna rectifier optimization modulation method and device, a terminal and a medium, and the method comprises the steps: constructing a space vector diagram, obtaining the duty ratio of a three-phase drive signal according to a small sector where a reference synthesis vector is located in the space vector diagram, carrying out the potential compensation of a basic vector participating in the synthesis of the reference synthesis vector, and obtaining a three-phase drive signal. And calculating action time according to the duty ratio after potential compensation and adjusting the action time. The duty ratio of the three-phase driving signal can be quickly and accurately determined through simple logic judgment and addition and subtraction operation, the error caused by vector offset is comprehensively considered, the duty ratio of a basic vector is accurately compensated, the action time is calculated according to the compensated duty ratio, and the duty ratio of the three-phase drivin