Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation
Introduction. With the adoption of standards to reduce losses in transformers it is necessary to change the design of transformers that remain unchanged. Further energy saving is possible with the use of non-traditional technical solutions for the improvement of transformers. Problem. In order to re...
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| Дата: | 2022 |
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| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | English Ukrainian |
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National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine”
2022
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eiekhpieduua-article-2577802022-05-30T16:52:46Z Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation Покращення основних показників трансформаторів з витими нероз’ємними магнітопроводами шляхом зміни формування кругових витків обмотки Avdieieva, O. А. Vakhonina, L. V. Sadovoy, O. S. Stavinskiy, R. A. Tsyganov, O. M. витий трансформатор нероз’ємний магнітопровід ізоляційний каркас обмотка намотка twisted transformer one-piece magnetic core insulating frame coil winding Introduction. With the adoption of standards to reduce losses in transformers it is necessary to change the design of transformers that remain unchanged. Further energy saving is possible with the use of non-traditional technical solutions for the improvement of transformers. Problem. In order to reduce idle losses, the curved magnetic circuits of power transformers are carried out in the form of low-volume circuits. Windings are injected into assembled magnetic conductors by shuttle machines. The shuttle of windings provides technological gaps in winding windows, which results in an increase in size, metal capacity and losses. Goal. Rationale for transformer performance improvement by excluding process gaps in winding windows. Methodology. The definition of the change in transformer indicators is performed using optimization functions of the dimensionless indicators of the technological level. The adequacy of the functions is confirmed by the calculation of the mass of the electromagnetic system and the losses of the transformer. The figures of the compact analogue are calculated from the named serial analogue. Results. The result is a reduction in mass and a loss in the compactness of the transformer. Originality. The improvement of the indicators and the simplification of the winding technology are provided by a change in the design of insulating frames of winding coils. Winding on the rods is ensured by rotating the outer part of the composite insulating frame. Practical significance. Replacement the design of the windings of transformer with power of 40 kVA of 1000 V voltage class with a spatially twisted, small-dimensional magnetic conductor on a compact analogue leads to a reduction in mass and overall dimensions by 15 % and (17-18) %. Efficiency increases by 0.3 %. Виконано аналіз конструктивно-технологічних особливостей електромагнітних систем трансформаторів з витими нероз’ємними магнітопроводами і круговими утворюючими контурами стрижнів та обмоткових витків. Запропоновано конструкцію обмоткової котушки з зовнішньою рухомою та внутрішньою нерухомою частинами опорно-ізоляційного каркасу та заміну вмотки витків на технологію намотки. Показано, що використання замість човникової вмотаної конструкції виконання обмотки з зовнішньою частиною ізоляційного каркаса, що обертається, призводить до поліпшення масогабаритних і енергетичного показників трансформатора. National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2022-05-30 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/257780 10.20998/2074-272X.2022.3.01 Electrical Engineering & Electromechanics; No. 3 (2022); 3-7 Электротехника и Электромеханика; № 3 (2022); 3-7 Електротехніка і Електромеханіка; № 3 (2022); 3-7 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/257780/254615 http://eie.khpi.edu.ua/article/view/257780/254616 Copyright (c) 2022 O. А. Avdieieva, L. V. Vakhonina, O. S. Sadovoy, R. A. Stavinskiy, O. M. Tsyganov http://creativecommons.org/licenses/by-nc/4.0 |
| institution |
Electrical Engineering & Electromechanics |
| collection |
OJS |
| language |
English Ukrainian |
| topic |
витий трансформатор нероз’ємний магнітопровід ізоляційний каркас обмотка намотка twisted transformer one-piece magnetic core insulating frame coil winding |
| spellingShingle |
витий трансформатор нероз’ємний магнітопровід ізоляційний каркас обмотка намотка twisted transformer one-piece magnetic core insulating frame coil winding Avdieieva, O. А. Vakhonina, L. V. Sadovoy, O. S. Stavinskiy, R. A. Tsyganov, O. M. Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| topic_facet |
витий трансформатор нероз’ємний магнітопровід ізоляційний каркас обмотка намотка twisted transformer one-piece magnetic core insulating frame coil winding |
| format |
Article |
| author |
Avdieieva, O. А. Vakhonina, L. V. Sadovoy, O. S. Stavinskiy, R. A. Tsyganov, O. M. |
| author_facet |
Avdieieva, O. А. Vakhonina, L. V. Sadovoy, O. S. Stavinskiy, R. A. Tsyganov, O. M. |
| author_sort |
Avdieieva, O. А. |
| title |
Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| title_short |
Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| title_full |
Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| title_fullStr |
Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| title_full_unstemmed |
Improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| title_sort |
improving the main indicators of transformers with twisted one-piece magnetic cores by changing the technology of circular winding turns formation |
| title_alt |
Покращення основних показників трансформаторів з витими нероз’ємними магнітопроводами шляхом зміни формування кругових витків обмотки |
| description |
Introduction. With the adoption of standards to reduce losses in transformers it is necessary to change the design of transformers that remain unchanged. Further energy saving is possible with the use of non-traditional technical solutions for the improvement of transformers. Problem. In order to reduce idle losses, the curved magnetic circuits of power transformers are carried out in the form of low-volume circuits. Windings are injected into assembled magnetic conductors by shuttle machines. The shuttle of windings provides technological gaps in winding windows, which results in an increase in size, metal capacity and losses. Goal. Rationale for transformer performance improvement by excluding process gaps in winding windows. Methodology. The definition of the change in transformer indicators is performed using optimization functions of the dimensionless indicators of the technological level. The adequacy of the functions is confirmed by the calculation of the mass of the electromagnetic system and the losses of the transformer. The figures of the compact analogue are calculated from the named serial analogue. Results. The result is a reduction in mass and a loss in the compactness of the transformer. Originality. The improvement of the indicators and the simplification of the winding technology are provided by a change in the design of insulating frames of winding coils. Winding on the rods is ensured by rotating the outer part of the composite insulating frame. Practical significance. Replacement the design of the windings of transformer with power of 40 kVA of 1000 V voltage class with a spatially twisted, small-dimensional magnetic conductor on a compact analogue leads to a reduction in mass and overall dimensions by 15 % and (17-18) %. Efficiency increases by 0.3 %. |
| publisher |
National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” |
| publishDate |
2022 |
| url |
http://eie.khpi.edu.ua/article/view/257780 |
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2024-06-01T14:40:13Z |
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2024-06-01T14:40:13Z |
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