Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
189 3 |
Ultima descărcare din IBN: 2023-09-09 11:09 |
Căutarea după subiecte similare conform CZU |
62-185.7 (4) |
Inginerie. Tehnică în general (3029) |
SM ISO690:2012 МОРОЗОВ, Александр, КАЗАКОВ, Юрий, МОРОЗОВ, Николай, НЕСТЕРОВ, Сергей. Идентификация по внешнему магнитному полю внутренних электромагнитных дефектов неявнополюсных синхронных генераторов. In: Problemele Energeticii Regionale, 2022, nr. 3(55), pp. 27-37. ISSN 1857-0070. DOI: https://doi.org/10.52254/1857-0070.2022.3-55.03 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Problemele Energeticii Regionale | ||||||
Numărul 3(55) / 2022 / ISSN 1857-0070 | ||||||
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DOI:https://doi.org/10.52254/1857-0070.2022.3-55.03 | ||||||
CZU: 62-185.7 | ||||||
Pag. 27-37 | ||||||
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The objectives of the work are to develop a non-contact method of detecting internal electromagnetic defects in synchronous generators based on the analysis of asymmetry of the external magnetic field distribution resulting from damage, establishing the relationship of defects of a generator with the pattern of field distribution, identifying diagnostic signs for the defects. These objectives are achieved by developing and using three-dimensional finite-element models of the external magnetic field of synchronous generators, by studying and analyzing the results of numerical simulation of external magnetic fields, by comparing the simulation results with experimental data. Significant results of the work include the improvement of the non-contact method for detecting internal electromagnetic defects in synchronous generators, revealing how defects of the generator manifest themselves in the asymmetry of magnetic field distribution, and detecting the correlation of field asymmetry with the type and severity of defects. For implicit-pole synchronous generators, it is reasonable to use the field asymmetry coefficient determined by the shift in the magnetic field distribution caused by field coils damage. The sign of the coefficient indicates the pole with a damaged field coil. The value of the coefficient characterizes the severity of damage to the field coils, with a critical value of 0.1. The significance of the results lies in the possibility of timely and non-contact diagnostics of internal electromagnetic defects of implicitpole synchronous generators, which can significantly reduce the economic damage from failures of generators without installation of diagnostic sensors of damage inside the generators. |
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Cuvinte-cheie Synchronous generators, electromagnetic defects, external magnetic field, Numerical simulation, asymmetry of magnetic field distributions, defect diagnosis, non-contact method, generatoare sincrone, defecte electromagnetice, câmp magnetic extern, modelare numerică, asimetrie a distribuțiilor câmpului magnetic, diagnosticarea defectelor, metodă non-contact, синхронные генераторы, электромагнитные дефекты, внешнее магнитное поле, численное моделирование, несимметрия распределений магнитного поля, диагностика дефектов, бесконтактный метод |
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