Patent ID: 11894687
Assignee: SUNGROW POWER SUPPLY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A method for ranking module level power electronic (MLPE) apparatuses, wherein the MLPE apparatuses are in communication connection with each other in a photovoltaic system, and the method comprises:
sending, by each MLPE apparatus according to a predetermined rule, an initial message to each other MLPE apparatus, wherein the initial message comprises a serial number corresponding to said MLPE apparatus and an accumulated operation duration of said MLPE apparatus;
determining, by the MLPE apparatuses, a rank of the accumulated operation duration of each MLPE apparatus according to the initial messages sent from all MLPE apparatuses, wherein during the determining, one of the MLPE apparatuses updates an interim rank of the respective accumulated operation duration according to the initial message of another of the MLPE apparatuses;
communicating, by the MLPE apparatuses, with a communication host of the photovoltaic system; and
reporting, by the MLPE apparatuses, the rank of the accumulated operation duration of each MLPE apparatus to the communication host.