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Data acquisition apparatus and methodology for self-diagnosing of AC modules

  • US 8,300,439 B2
  • Filed: 02/27/2008
  • Issued: 10/30/2012
  • Est. Priority Date: 03/07/2007
  • Status: Active Grant
First Claim
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1. A power generating system comprising:

  • a first array of two or more solar cell modules, each module comprising an inverter and a photovoltaic (PV) laminate, said PV laminate including a plurality of electrically interconnected solar cells for generating a DC power output, and said inverter electrically connected to said PV laminate for converting said DC power output to an AC power output;

    an AC power bus extending between said modules and connected to said inverter of each module for collecting the AC power output of said first array of modules; and

    a junction box electrically connected to said AC power bus;

    wherein said inverter is configured to;

    sense selected parameters from the group consisting of DC voltage, DC current, AC voltage, AC current, cumulative energy, inverter temperature, PV laminate temperature, and solar cell temperature;

    digitize said sensed parameters, andtransmit sensed parameters data over said AC power bus to said junction box; and

    wherein said junction box is configured to;

    receive and store sensed parameters data transmitted by said inverters over said AC power bus;

    analyze said stored parameters data on a module basis and an array basis and store the results of the analysis; and

    transmit said digitized sensed parameters data and/or the results of said analysis to a remote receiver.

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