×

Smart-grid adaptive power management method and system with power factor optimization and total harmonic distortion reduction

  • US 8,874,277 B2
  • Filed: 09/15/2010
  • Issued: 10/28/2014
  • Est. Priority Date: 09/15/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method of power factor correction in a power delivery system, comprising:

  • determining a total current requirement of at least one load coupled to, and drawing current from, a power supply with a known power limit and current limit;

    determining an available excess current, wherein the available excess current is a current available beyond the total current requirement of the at least one load;

    determining whether a new non-critical load has been introduced;

    calculating a plurality of switching configurations that are each capable of switching current from the power supply to the at least one load and the non-critical load without exceeding the current limit of the power supply when a current requirement of the new non-critical load exceeds the available excess current, wherein each switching configuration of said plurality of switching configurations is associated with a power factor defined as the ratio of real power transferred to apparent power;

    identifying an optimal switching configuration from among said plurality of switching configurations that will realize a highest power factor of said power factors associated with each of said plurality of switching configurations, wherein the highest power factor provides for a highest efficiency of the system from among said plurality of switching configurations; and

    using said optimal switching configuration to switch current from the power supply to the at least one load and the non-critical load.

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