Laminated core testing device
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Abstract
The invention relates to a laminated core testing device for testing laminated cores in a generator. To this end, the laminated core testing device comprises an exciting winding, which is situated parallel to a rotation axis of the generator and which is connected to a secondary alternating current generator, and comprises an infrared image acquisition device, which is designed for acquiring infrared recordings. Said secondary alternating current generator has a controllable frequency converter, and the secondary alternating current generator, at a frequency ranging from 400 to 600 Hz, provides, in a single-phase manner, an output of 200 kW with a controllable output voltage ranging from 0 to 3.0 kV.
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Citations
26 Claims
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1-13. -13. (canceled)
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14. A laminated core testing device to test a laminated core in a generator, comprising:
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a field winding that lies in parallel with an axis of rotation of the generator and is connected to a device that produces alternating current;
an infrared image detection device that is designed to detect infrared radiation; and
a high-voltage testing device that makes available a frequency that is greater than 50 Hz and a power in single-phase form at an output voltage of at least 400 V that can be regulated. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A high-voltage testing device, comprising:
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a single-phase output signal that can be regulated; and
an output voltage of at least 400 V having an output frequency of more than 50 Hz for a laminated core testing arrangement in a generator. - View Dependent Claims (22, 23, 24, 25)
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26. A method for testing for faults in a stator of a generator, comprising:
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producing alternating current via a high-voltage testing device being connected to a field winding that lies in parallel with an axis of rotation of the generator;
detecting and recording infrared beams in the direction of the axis of rotation using an infrared image detection device, making available power in a single phase form via a high-voltage testing device at a frequency of greater than 50 Hz at an output voltage of at least 400 V that can be regulated; and
inspecting a detected infrared recording for hot-spots which point towards faults in the generator.
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Specification