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Design and Implementation of Planar Magnetic Integrated LCL-EMI Filter Based on Interleaved Multi-GND-layer Structure
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Xin YE1, Zijian LU1, Yitao LIU2
Journal of Power Supply | 2025, 23(1) : 243 - 250
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Journal of Power Supply | 2025, 23(1): 243-250
• EMI/EMC •
Design and Implementation of Planar Magnetic Integrated LCL-EMI Filter Based on Interleaved Multi-GND-layer Structure
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Xin YE1, Zijian LU1, Yitao LIU2
Affiliations
  • 1 College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518000, China
  • 2 Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robots, Shenzhen University, Shenzhen 518000, China
Published: 2025-01-30 doi: 10.13234/j.issn.2095-2805.2025.1.243
Outline
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Harmonic and electromagnetic interference (EMI) filters are two important output filters used to sup-press the harmonic distortion and EMI noise in grid-connected inverters. Harmonic and EMI filters are combined by planar magnetic integration to reduce the volume and weight. Through the selection of an appropriate magnetic core, the common mode and differential mode inductors are integrated into the same core by drawing PCB planar coil. To integrate the discrete capacitors and further realize the planar magnetic integration of EMI filter, the dielectric is inserted into the PCB and the layer connection mode is reasonably planned. A symmetric LCL filter is used to replace the traditional asymmetric structure of magnetic integration. Furthermore, by designing the air gap in the center pillar of the magnetic core and reasonably arranging the planar windings, the inductors of LCL harmonic filter are also integrated into the same magnetic core unit to form an LCL-EMI planar magnetic integrated filter. A gallium nitride single-phase inverter platform was built, and the LCL-EMI filter with planar magnetic integration was experimentally analyzed to verify the feasibility of the planar magnetic integration method.

Inverter  /  planar magnetic integration  /  LCL filter  /  electromagnetic interference (EMI) filter
Xin YE, Zijian LU, Yitao LIU. Design and Implementation of Planar Magnetic Integrated LCL-EMI Filter Based on Interleaved Multi-GND-layer Structure[J]. Journal of Power Supply, 2025 , 23 (1) : 243 -250 . DOI: 10.13234/j.issn.2095-2805.2025.1.243
Funding
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  • National Natural Science Foundation of China(52007122)
Appendix
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Year 2025 volume 23 Issue 1
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387
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.1.243
  • Receive Date：2022-02-22
  • Online Date：2025-07-09
  • Published：2025-01-30
Article Data
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History
  • Received：2022-02-22
  • Revised：2022-07-11
  • Accepted：2022-07-13
Funding
National Natural Science Foundation of China(52007122)
Affiliations
    1 College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518000, China
    2 Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robots, Shenzhen University, Shenzhen 518000, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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