Measuring method and device for measuring deflections at stator end windings
First Claim
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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Accused Products
Abstract
The present disclosure relates to a method, a device, and a computer program for measuring deflections at the stator end winding of an electric machine. Disclosed is a measurement method, a device, and a computer program for measuring vibrations at the stator end winding of an electric machine, with the steps of arranging sensors at the stator end winding at different positions, measuring the vibrations with the sensors, measuring the amplitudes and phases of the radial and tangential vibrations with the sensors, deriving displacements of the stator end winding due to vibrations by means of the measured amplitudes and/or phases of the radial and tangential vibrations.
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Citations
8 Claims
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1. A measurement method for measuring vibrations at a stator end winding of an electric machine, comprising:
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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. - View Dependent Claims (2, 3, 4, 8)
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5. A measurement device for measuring vibrations at a stator end winding of an electric machine, the measurement device comprising:
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three sensors arranged at different equidistant positions of the stator end winding operable for measuring amplitudes and phases of radial vibrations and tangential vibrations of the vibrations; a calculation unit operable for 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, and operable for attaining data and assigning a deflection shape of the stator end winding in operation based on 2-node shapes and/or 4-node shapes; and a display for displaying the attained measured data and assigned operation deflection shape of the stator end winding in operation. - View Dependent Claims (6, 7)
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Specification