Serially connected inverters

  • US 10,666,125 B2
  • Filed: 11/28/2017
  • Issued: 05/26/2020
  • Est. Priority Date: 01/12/2011
  • Status: Active Grant
First Claim
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1. A method comprising:

  • converting, using each of a plurality of inverters comprising output terminals connected serially to form a serial output, input power to output alternating-current (AC) power at the output terminals of each of the plurality of inverters while maintaining a serial voltage of the serial output substantially equal to and in synchronization with a grid voltage of a grid connected across the serial output; and

    based on a failure in operating at least one of the plurality of inverters;

    bypassing the at least one of the plurality of inverters using an AC current bypass configured to pass an alternating current; and

    operating others of the plurality of inverters to adjust the serial voltage to be substantially equal to the grid voltage.

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