×

SYSTEMS AND METHODS FOR DETECTING MOTOR ROTOR FAULTS

  • US 20120265457A1
  • Filed: 02/07/2012
  • Published: 10/18/2012
  • Est. Priority Date: 04/15/2011
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting a fault condition in a rotor of an electric induction motor comprising:

  • sampling a plurality of currents from an electric induction motor to obtain a plurality of current data points;

    calculating a global maximum magnitude of the plurality of current data points in the frequency domain over a range of predetermined frequencies;

    calculating an average magnitude of the plurality of current data points in the frequency domain over the range of predetermined frequencies; and

    declaring a motor rotor fault condition based on a comparison between the average magnitude and a first predetermined threshold, a comparison between a difference between the global maximum magnitude and the average magnitude and a second predetermined threshold, and a comparison between the global maximum magnitude and at least a third predetermined threshold.

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