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Measuring method and device for measuring deflections at stator end windings

  • US 10,591,349 B2
  • Filed: 03/23/2016
  • Issued: 03/17/2020
  • Est. Priority Date: 03/25/2015
  • Status: Active Grant
First Claim
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1. A measurement method for measuring vibrations at a stator end winding of an electric machine, comprising:

  • arranging sensors at the stator end winding at different positions;

    measuring the vibrations with sensors;

    measuring amplitudes and phases of radial vibrations and tangential vibrations of the vibrations with the sensors;

    deriving displacements of the stator end winding due to the vibrations via the measured amplitudes and/or phases of the radial vibrations and the tangential vibrations;

    assigning the derived displacements to an operation deflection shape of the stator end winding;

    deriving the operation deflection shape of the stator end winding based on 2-node shapes and/or 4-node shapes using a calculation unit; and

    displaying attained measured data and assigned operation deflection shape on a display.

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