Interleaved vienna rectifying device and controlling method thereof

An interleaved Vienna rectifier device including:

• an interleaved Vienna rectifier circuit comprising a plurality of switches;
• and
• a controller coupled to the interleaved Vienna rectifier circuit,
• wherein the controller is configured for:
• performing positive and negative sequence separation on a positive-negative voltage sequence component and a positive-negative current sequence component, to separate a positive voltage sequence component from a negative voltage sequence component, and a positive current sequence component from a negative current sequence component;
• controlling the positive voltage sequence component, the negative voltage sequence component, the positive current sequence component and the negative current sequence component respectively;
• and
• using a Proportional-Integral (PI) controller and a Harmonic Elimination (PR) controller within a current inner loop to control the positive voltage sequence component, the negative voltage sequence component, the positive current sequence component and the negative current sequence component for generating a plurality of control signals to control the switches of the interleaved Vienna rectifier circuit.