Systems and methods for an enhanced watchdog in solar module installations

  • US 8,933,321 B2
  • Filed: 12/01/2009
  • Issued: 01/13/2015
  • Est. Priority Date: 02/05/2009
  • Status: Active Grant
First Claim
Patent Images

1. A system comprising:

  • a watchdog unit coupled between a solar module and a power bus, the power bus configured to connect a plurality of solar modules to an inverter, the watchdog unit having;

    a local controller configured to monitor a communication from a central controller remote from the solar module and determine whether the communication has been interrupted for a time period longer than a predetermined number of allowed skips; and

    at least one switch configured to disconnect the solar module from the power bus in response to a determination by the location controller that the communication from the central controller has been interrupted for a time period longer than the predetermined number of allowed skips;

    wherein the watchdog unit is configured to connect the solar module to the power bus when the communication is not interrupted.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×