Frequency control and power balancing in disturbed power inverter system and method thereof

  • US 7,492,617 B2
  • Filed: 06/28/2007
  • Issued: 02/17/2009
  • Est. Priority Date: 06/29/2005
  • Status: Active Grant
First Claim
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1. An electrical power control system comprising:

  • a first inverter;

    an electrical power grid;

    a first inductive member connecting said first inverter to said electrical power grid; and

    ,a first inverter control system having a phase locked loop including a transfer function providing a predetermined phase shift between 0.5 to 500 degrees per Hz during nearly steady operation, whereby the input of said phase locked loop is a voltage on said electrical power grid side of said first inverter and the output of said phase locked loop is a sine wave corresponding to the desired fundamental value and phase at the output of said first inverter.

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