Vienna rectifier, vienna rectifier control method, and charging pile

A charging pile, comprising:

• a Vienna rectifier, and
• a direct current/direct current conversion circuit;
• an input end of the direct current/direct current conversion circuit is configured to connect to an output end of the Vienna rectifier;
• an output end of the direct current/direct current conversion circuit is an output end of the charging pile;
• and
• the direct current/direct current conversion circuit is configured to perform direct current conversion on a direct current output by the Vienna rectifier;
• wherein the Vienna rectifier comprises a three-phase rectifier circuit and a controller;
• an input end of each-phase rectifier circuit of the three-phase rectifier circuit is connected to a one-phase alternating current source of a three-phase alternating current source;
• an output end of each-phase rectifier circuit of the three-phase rectifier circuit is connected to an output end of the Vienna rectifier;
• and
• the controller is configured to:
• when a voltage phase of an ith-phase rectifier circuit precedes a current phase of the ith-phase rectifier circuit by a first angle, control a switch of the ith-phase rectifier circuit to be turned on within a second angle after a voltage of the ith-phase rectifier circuit reaches a zero crossing point, wherein the second angle is greater than or equal to the first angle;
• and when the current phase of the ith-phase rectifier circuit of the three-phase rectifier circuit precedes the voltage phase of the ith-phase rectifier circuit by the first angle, control the switch of the ith-phase rectifier circuit to be turned on within a third angle before the voltage of the ith-phase rectifier circuit reaches the zero crossing point, wherein the third angle is greater than or equal to the first angle, and i=1, 2, or 3.