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Methods for minimizing double-frequency ripple power in single-phase power conditioners

  • US 8,325,499 B2
  • Filed: 08/23/2011
  • Issued: 12/04/2012
  • Est. Priority Date: 10/11/2007
  • Status: Active Grant
First Claim
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1. A method for reducing a double-frequency ripple power exchanged between a load and an energy source, the energy source being configured to deliver electrical output power to the load through a single-phase power conditioner, the method comprising:

  • determining a first phase shift of an alternating current (AC) output signal of the power conditioner;

    determining an average AC output power of the power conditioner; and

    generating an AC signal at an energy storage device, the AC signal having (i) an amplitude that is a function of the average AC output power and (ii) a phase shift substantially equal to 45 degrees minus an amount that is dependent on the determined first phase shift.

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