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Fuel cell system with grid independent operation and DC microgrid capability

  • US 10,322,637 B2
  • Filed: 07/02/2015
  • Issued: 06/18/2019
  • Est. Priority Date: 11/15/2010
  • Status: Active Grant
First Claim
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1. A fuel cell system, comprising:

  • a plurality of power modules each comprising at least one fuel cell segment;

    an input output module comprising at least one first inverter;

    a plurality of second inverters;

    at least one uninterruptible power module comprising at least one of the plurality of second inverters; and

    a control logic unit comprising a selective connection mechanism;

    wherein;

    the at least one fuel cell segment of each of the plurality of power modules is electrically connected in parallel to the at least one first inverter and at least one of the plurality of second inverters;

    the at least one first inverter is electrically connected to a load through an electrical grid, wherein the at least one first inverter is selectively electrically connected to the electrical grid through a switch;

    the plurality of second inverters are electrically connected in parallel to the load without using the electrical grid; and

    the control logic unit is configured to selectively electrically connect the electrical grid to the load via configuring the selective connection mechanism into a first position, to selectively electrically connect the plurality of second inverters to the load via configuring the selective connection mechanism into a second position, and to control the plurality of second inverters as a single inverter.

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