Composite communication system and composite communication mode of micro inverter based on PLC/ZigBee (Power Line Carrier/ZigBee)

The invention discloses a composite communication system and a composite communication mode of a micro inverter based on PLC/ZigBee (Power Line Carrier/ZigBee). The composite communication system comprises an upper computer, a concentrator and n micro inversion units; any ith micro inversion unit in the n micro inversion units comprises a micro inverter, a wireless communication ZigBee module and a PLC module; and a PLC communication layer is mainly utilized to carry out communication, ZigBee wireless communication is used as a monitoring layer to take charge of monitoring communication data of a PLC, and if a large difference exists between the communication data of the PLC and the ZigBee wireless communication, communication of the PLC must be cut off and simultaneously, the ZigBee wireless communication takes over PLC communication. The composite communication system and the composite communication mode which are disclosed by the invention can overcome the defects and shortcomings brought by a single communication mode of a conventional micro inverter, and guarantee the micro inverter to normally work in real time, so that working efficiency, stability, reliability and an error-tolerant rate of the system can be improved.