Printed detector bands for measurements of strain in core interior of transformers
| Autor: | Andreas Windischhofer, Markus Giefing, Helmut Pfützner, Gerald Trenner, Georgi Shilyashki |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science law 020208 electrical & electronic engineering 0103 physical sciences Detector 0202 electrical engineering electronic engineering information engineering Magnetostriction 02 engineering and technology Composite material Transformer 01 natural sciences law.invention |
| Zdroj: | Journal of Electrical Engineering. 69:481-484 |
| ISSN: | 1339-309X |
| DOI: | 10.2478/jee-2018-0081 |
| Popis: | In the recent years, the reducing of audible noise of laminated machine cores has become great importance, due to high relevance given to environmental awareness. The strain caused by magnetostriction and magnetostatic forces is recognized as one of the main sources of noise. Especially for transformers, strain in the core interior tends to be different from that on the surface, due to differences of clamping, variation of in-plane fluxes and pronounced off-plane (normal) fluxes. For the first time, local measurements of strain in the core interior are presented by means of a novel printed detector band. First results tend to be very promising, exhibiting very high sensitivity and resolution. So far, the relevance of measurements is restricted to comparisons of different core regions. |
| Databáze: | OpenAIRE |
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