Method for measuring a stator core of an electric machine and measuring device
First Claim
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1. A method for measuring a stator core of an electrical machine comprising:
- winding at least one excitation coil around the stator core;
applying, via an excitation device comprising at least a capacitor a discontinuous excitation voltage to the at least one excitation coil to magnetically excite the stator core to obtain magnetic excitation of the stator core;
measuring with at least one detecting device a temperature quantity or a vibration quantity of the magnetically excited stator core; and
determining interlaminar laminate shorts of the stator core based on extraordinary values of the detected vibration quantity of the magnetically excited stator core measurement, or determining laminated shorts of the stator core based on the temperature quantity of the magnetically excited stator core measurement, the extraordinary values of detected vibrations indicate that a stability of the stator core diverges at a specific spot.
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Abstract
A method for measuring a stator core of an electrical machine includes the steps of winding at least one excitation coil around the stator core, applying a discontinuous voltage to the excitation coil(s) to magnetically excite the stator core, and measuring a quantity of the magnetically excited stator core. Further, a corresponding measuring device is disclosed.
25 Citations
16 Claims
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1. A method for measuring a stator core of an electrical machine comprising:
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winding at least one excitation coil around the stator core; applying, via an excitation device comprising at least a capacitor a discontinuous excitation voltage to the at least one excitation coil to magnetically excite the stator core to obtain magnetic excitation of the stator core; measuring with at least one detecting device a temperature quantity or a vibration quantity of the magnetically excited stator core; and determining interlaminar laminate shorts of the stator core based on extraordinary values of the detected vibration quantity of the magnetically excited stator core measurement, or determining laminated shorts of the stator core based on the temperature quantity of the magnetically excited stator core measurement, the extraordinary values of detected vibrations indicate that a stability of the stator core diverges at a specific spot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A measuring device for measuring a laminated stator core of an electrical machine comprising:
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at least one excitation coil wound around the stator core; an excitation device comprising at least a capacitor for magnetically exciting the stator core to obtain magnetic excitation of the stator core which comprises the at least one excitation coil wound around the stator core, the excitation device configured to generate a discontinuous voltage applicable to the at least one excitation coil to magnetically excite the stator core; at least one detection device configured to measure a temperature quantity or a vibration quantity of the magnetically excited stator core to obtain measurements; and a calculation unit configured to determine properties of the stator core based on the measurements of the at least one detection device to determine interlaminar laminate shorts of the stator core based on extraordinary values of detected vibration quantity measurements that indicate that a stability of the stator core diverges at a specific spot, or to determine laminated shorts of the stator core based on temperature quantity measurements. - View Dependent Claims (14, 15, 16)
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Specification