×

Converter lifetime improvement method for doubly fed induction generator

  • US 8,736,091 B2
  • Filed: 06/18/2010
  • Issued: 05/27/2014
  • Est. Priority Date: 06/18/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • operating a rotor-side converter and a line-side inverter of a power system, wherein the rotor-side converter is coupled to a generator;

    calculating an aging parameter of the line-side inverter converter;

    changing a first operational mode of the rotor-side converter to a second operational mode when the aging parameter is above a threshold parameter for achieving a desired lifespan of the line-side inverter, wherein changing the first operational mode to the second operational mode comprisesincreasing a first fundamental frequency of the rotor-side converter to a second fundamental frequency larger than the first fundamental frequency regardless of a speed of a rotor that corresponds to the generator.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×