Power line communication system, power electronic apparatus, and interference suppression method

An apparatus applicable to a power line communication (PLC) system comprising a PLC signal transmitting end and a PLC signal receiving end, the PLC signal transmitting end is connected to the PLC signal receiving end through a power line, the apparatus is connected to the power line and comprises:

• a control unit;
• and
• a power electronic circuit;
• wherein the control unit is configured to:
• increase output impedance of the power electronic circuit in a first PLC communication frequency band, and
• reduce interference from an output current of the power electronic circuit to a PLC signal in the first PLC communication frequency band, wherein the first PLC communication frequency band is a PLC communication frequency band in which the PLC signal transmitting end sends the PLC signal to the PLC signal receiving end.

A method for a power line communication (PLC) system, wherein the method is applicable to a power electronic apparatus in the PLC system,

• the method comprising:
• obtaining, by the power electronic apparatus, a first PLC communication frequency band, wherein the first PLC communication frequency band is a PLC communication frequency band in which a PLC signal transmitting end sends a PLC signal to a PLC signal receiving end;
• and
• increasing output impedance in the first PLC communication frequency band, to reduce interference from an output current of the power electronic apparatus to the PLC signal in the first PLC communication frequency band;
• wherein,
• the PLC system comprises a PLC signal transmitting end, a PLC signal receiving end, and the power electronic apparatus, the PLC signal transmitting end is connected to the PLC signal receiving end through a power line, and the power electronic apparatus is connected to the power line;
• and.