Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes
Considering the magnetic shielding requirements of both geomagnetic field and 50 Hz power-line frequency in the complex working conditions of the power grid, an electromagnetic shielding system combining active and passive modes is proposed in this article. A three-dimensional Helmholtz coil with a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/6/538 |
| _version_ | 1827305401749602304 |
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| author | Qingzhi Meng Zelin Wang Qijing Lin Dengfeng Ju Xianfeng Liang Dan Xian |
| author_facet | Qingzhi Meng Zelin Wang Qijing Lin Dengfeng Ju Xianfeng Liang Dan Xian |
| author_sort | Qingzhi Meng |
| collection | DOAJ |
| description | Considering the magnetic shielding requirements of both geomagnetic field and 50 Hz power-line frequency in the complex working conditions of the power grid, an electromagnetic shielding system combining active and passive modes is proposed in this article. A three-dimensional Helmholtz coil with a magnetic shielding barrel nested inside is established by the COMSOL simulation tool, and the magnetic shielding efficiency of the system is analyzed. Comparing different materials, the simulation results indicate that permalloy alloy exhibits better shielding performance than pure iron and nickel materials. Additionally, the overall shielding efficiency of the shielding barrel increases linearly with the number of multiple layers. Under the combined active and passive electromagnetic shielding conditions, the system achieves a shielding efficiency of <i>S<sub>E</sub></i> = 113.98 dB, demonstrating excellent performance in shielding both AC and DC interference magnetic fields. This study provides theoretical guidance for the construction of magnetic shielding systems in electromagnetic interference environment. |
| first_indexed | 2024-04-24T17:57:36Z |
| format | Article |
| id | doaj.art-ccd389e9b68243a2aee3d32e8886b725 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-04-24T17:57:36Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ccd389e9b68243a2aee3d32e8886b7252024-03-27T13:57:37ZengMDPI AGNanomaterials2079-49912024-03-0114653810.3390/nano14060538Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive ModesQingzhi Meng0Zelin Wang1Qijing Lin2Dengfeng Ju3Xianfeng Liang4Dan Xian5State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaInstitute of Electric Power Sensing Technology, State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, ChinaInstitute of Electric Power Sensing Technology, State Grid Smart Grid Research Institute Co., Ltd., Beijing 102209, ChinaState Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaConsidering the magnetic shielding requirements of both geomagnetic field and 50 Hz power-line frequency in the complex working conditions of the power grid, an electromagnetic shielding system combining active and passive modes is proposed in this article. A three-dimensional Helmholtz coil with a magnetic shielding barrel nested inside is established by the COMSOL simulation tool, and the magnetic shielding efficiency of the system is analyzed. Comparing different materials, the simulation results indicate that permalloy alloy exhibits better shielding performance than pure iron and nickel materials. Additionally, the overall shielding efficiency of the shielding barrel increases linearly with the number of multiple layers. Under the combined active and passive electromagnetic shielding conditions, the system achieves a shielding efficiency of <i>S<sub>E</sub></i> = 113.98 dB, demonstrating excellent performance in shielding both AC and DC interference magnetic fields. This study provides theoretical guidance for the construction of magnetic shielding systems in electromagnetic interference environment.https://www.mdpi.com/2079-4991/14/6/538electromagnetic shielding systemactive and passive modesmagnetic shielding efficiency |
| spellingShingle | Qingzhi Meng Zelin Wang Qijing Lin Dengfeng Ju Xianfeng Liang Dan Xian Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes Nanomaterials electromagnetic shielding system active and passive modes magnetic shielding efficiency |
| title | Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes |
| title_full | Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes |
| title_fullStr | Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes |
| title_full_unstemmed | Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes |
| title_short | Theoretical Analysis of a Magnetic Shielding System Combining Active and Passive Modes |
| title_sort | theoretical analysis of a magnetic shielding system combining active and passive modes |
| topic | electromagnetic shielding system active and passive modes magnetic shielding efficiency |
| url | https://www.mdpi.com/2079-4991/14/6/538 |
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