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Optimized Design of Primary Side Feedback Power Converter Based on Active Filter Topology
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Jifei DU1, Yang WANG2, Li WANG2, 3, Haoruo LIU3, Yunfei MU1, Qiang SUN3
Electric Drive | 2024, 54(10) : 15 - 20
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Electric Drive | 2024, 54(10): 15-20
Optimized Design of Primary Side Feedback Power Converter Based on Active Filter Topology
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Jifei DU1, Yang WANG2, Li WANG2, 3, Haoruo LIU3, Yunfei MU1, Qiang SUN3
Affiliations
  • 1. Key Lab of Smart Grid of Ministry of Education，Tianjin University，Tianjin 300072，China
  • 2. Tianjin Research Institute of Electric Science Co.，Ltd.，Tianjin 300180，China
  • 3. College of Engineering and Technology，Tianjin Agricultural University，Tianjin 300392，China
Published: 2024-10-20 doi: 10.19457/j.1001-2095.dqcd25393
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The primary side feedback can stabilize the output voltage，and improve the service life of the equipment without using the secondary winding detection error signal. The topology of active filter and the improved method of primary side feedback were adopted. The performance of active EMI filter topologies was analyzed from insertion loss and equivalent circuit，the active filter with voltage sampling and current compensation was adopted. Through describing the mechanism of primary-side feedback of sampling knee point voltage，the small signal modeling of the converter in discontinuous current mode（DCM） was carried out，and the compensation network was designed to ensure the stability. The simulation and experimental results show that the active EMI filter can effectively replace the traditional filtering method，and the original side feedback method can detect and correct the output voltage fluctuation to ensure the voltage stability.

power converter  /  small signal model  /  primary side feedback  /  active EMI filter
Jifei DU, Yang WANG, Li WANG, Haoruo LIU, Yunfei MU, Qiang SUN. Optimized Design of Primary Side Feedback Power Converter Based on Active Filter Topology[J]. Electric Drive, 2024 , 54 (10) : 15 -20 . DOI: 10.19457/j.1001-2095.dqcd25393
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Year 2024 volume 54 Issue 10
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Article Info
doi: 10.19457/j.1001-2095.dqcd25393
  • Receive Date：2023-09-26
  • Online Date：2025-11-11
  • Published：2024-10-20
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  • Received：2023-09-26
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Affiliations
    1. Key Lab of Smart Grid of Ministry of Education，Tianjin University，Tianjin 300072，China
    2. Tianjin Research Institute of Electric Science Co.，Ltd.，Tianjin 300180，China
    3. College of Engineering and Technology，Tianjin Agricultural University，Tianjin 300392，China
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