Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure
Large-capacity medium-frequency transformers （MFTs） offer advantages such as compact size， light weight， and high power density， but they also face significant challenges related to magnetic and thermal performance. To ensure the reliability of these transformers， a 100 MW level， 400 Hz MFT is selec...
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| Format: | Article |
| Language: | zho |
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zhejiang electric power
2025-01-01
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| Series: | Zhejiang dianli |
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| Online Access: | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=2d6d331b-3f33-4790-90fa-3af66e50be2e |
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| _version_ | 1823857069231439872 |
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| author | TIAN Fengqi DU Zhenbin WANG Jianmin SHI Jian |
| author_facet | TIAN Fengqi DU Zhenbin WANG Jianmin SHI Jian |
| author_sort | TIAN Fengqi |
| collection | DOAJ |
| description | Large-capacity medium-frequency transformers （MFTs） offer advantages such as compact size， light weight， and high power density， but they also face significant challenges related to magnetic and thermal performance. To ensure the reliability of these transformers， a 100 MW level， 400 Hz MFT is selected for a simulation analysis of its magnetic and thermal performance. The electrical conductivity of the windings is first adjusted， and finite element software is then used to calculate and analyze the magnetic field distribution， loss density， and temperature field. The results reveal that leakage flux at the ends of the windings significantly impacts the structural components， leading to excessive stray losses and localized overheating. To address this， the limb-type magnetic shielding structure at the ends of transformer body is improved， with an analysis of how the dimensions of the shielding structure affect the magnetic and thermal performance of the components. A comparative analysis of the simulation results before and after these improvements shows a significant reduction in loss density and temperature rise in the structural components， ultimately ensuring that the magnetic and thermal performance meets design requirements. |
| format | Article |
| id | doaj-art-7f7d5e9770d247fe998bf4968df648a7 |
| institution | Kabale University |
| issn | 1007-1881 |
| language | zho |
| publishDate | 2025-01-01 |
| publisher | zhejiang electric power |
| record_format | Article |
| series | Zhejiang dianli |
| spelling | doaj-art-7f7d5e9770d247fe998bf4968df648a72025-02-12T00:54:58Zzhozhejiang electric powerZhejiang dianli1007-18812025-01-0144110511510.19585/j.zjdl.2025010111007-1881（2025）01-0105-11Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structureTIAN Fengqi0DU Zhenbin1WANG Jianmin2SHI Jian3State Key Laboratory of Reliability and Intelligence of Electrical Equipment， Hebei University of Technology， Tianjin 300130， ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment， Hebei University of Technology， Tianjin 300130， ChinaHebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment， Baoding， Hebei 071056， ChinaHebei Province Key Laboratory of Electromagnetic and Structural Performance of Power Transmission and Transformation Equipment， Baoding， Hebei 071056， ChinaLarge-capacity medium-frequency transformers （MFTs） offer advantages such as compact size， light weight， and high power density， but they also face significant challenges related to magnetic and thermal performance. To ensure the reliability of these transformers， a 100 MW level， 400 Hz MFT is selected for a simulation analysis of its magnetic and thermal performance. The electrical conductivity of the windings is first adjusted， and finite element software is then used to calculate and analyze the magnetic field distribution， loss density， and temperature field. The results reveal that leakage flux at the ends of the windings significantly impacts the structural components， leading to excessive stray losses and localized overheating. To address this， the limb-type magnetic shielding structure at the ends of transformer body is improved， with an analysis of how the dimensions of the shielding structure affect the magnetic and thermal performance of the components. A comparative analysis of the simulation results before and after these improvements shows a significant reduction in loss density and temperature rise in the structural components， ultimately ensuring that the magnetic and thermal performance meets design requirements.https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=2d6d331b-3f33-4790-90fa-3af66e50be2emftleakage magnetic fieldhigh-frequency losslocalized overheatingstructural improvement |
| spellingShingle | TIAN Fengqi DU Zhenbin WANG Jianmin SHI Jian Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure Zhejiang dianli mft leakage magnetic field high-frequency loss localized overheating structural improvement |
| title | Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure |
| title_full | Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure |
| title_fullStr | Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure |
| title_full_unstemmed | Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure |
| title_short | Simulation analysis of the magnetic and thermal performance of large-capacity medium-frequency transformers and improvement in shielding structure |
| title_sort | simulation analysis of the magnetic and thermal performance of large capacity medium frequency transformers and improvement in shielding structure |
| topic | mft leakage magnetic field high-frequency loss localized overheating structural improvement |
| url | https://zjdl.cbpt.cnki.net/WKE3/WebPublication/paperDigest.aspx?paperID=2d6d331b-3f33-4790-90fa-3af66e50be2e |
| work_keys_str_mv | AT tianfengqi simulationanalysisofthemagneticandthermalperformanceoflargecapacitymediumfrequencytransformersandimprovementinshieldingstructure AT duzhenbin simulationanalysisofthemagneticandthermalperformanceoflargecapacitymediumfrequencytransformersandimprovementinshieldingstructure AT wangjianmin simulationanalysisofthemagneticandthermalperformanceoflargecapacitymediumfrequencytransformersandimprovementinshieldingstructure AT shijian simulationanalysisofthemagneticandthermalperformanceoflargecapacitymediumfrequencytransformersandimprovementinshieldingstructure |