×

Parallel connected inverters

  • US 8,289,742 B2
  • Filed: 12/05/2008
  • Issued: 10/16/2012
  • Est. Priority Date: 12/05/2007
  • Status: Active Grant
First Claim
Patent Images

1. A distributed power system comprising:

  • a direct current (DC) power source;

    a plurality of inverters with respective inverter inputs adapted for connection in parallel to said DC power source and with respective inverter outputs adapted for connection in parallel; and

    a plurality of control modules coupled respectively to said inverter inputs and outputs, wherein for each inverter said respective control module includes;

    (i) a voltage loop block configured to sense a voltage at the input and to compare the voltage at the input to at least one previously specified reference voltage and to output a current reference signal based on the comparison; and

    (ii) a current loop block configured to sense an input current to the inverter and to compare said current reference signal with a current signal proportional to the input current of the inverter to adjust the input current until an input power equilibrates.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×