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SAPF Harmonic Detection Method Based on Triangle Orthogonal Principle
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Dongdong CHEN1, 2, 3, Shengqi ZHANG1, Long XIAO2, 3
Electric Drive | 2024, 54(9) : 26 - 31
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Electric Drive | 2024, 54(9): 26-31
SAPF Harmonic Detection Method Based on Triangle Orthogonal Principle
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Dongdong CHEN1, 2, 3, Shengqi ZHANG1, Long XIAO2, 3
Affiliations
  • 1 College of Electrical Engineering and Automation， Fuzhou University， Fuzhou 350108，Fujian， China
  • 2 School of Electronic and Electrical Engineering， Minnan University of Science and Technology， Quanzhou 362700，Fujian， China
  • 3 Key Laboratory of Industrial Automation Control Technology and Application of Fujian Higher Education， Quanzhou 362700，Fujian， China
Published: 2024-09-20 doi: 10.19457/j.1001-2095.dqcd24830
Outline
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Due to the wide control bandwidth of the shunt active power filter（SAPF），the resonance problem of the LCL output filter has become a key problem of the SAPF. To solve the resonance problem of the LCL filter，a novel damping method based on active damping circuit was proposed to achieve the damping effect without affecting the SAPF control. The proposed method was based on an auxiliary converter connected in series with the capacitor branch of LCL filter. In the auxiliary converter，the resonant current was detected and injected inversely as the reference signal of the converter，to achieve the damping effect on the resonant current. The stability of the proposed method was carried out through the frequency response analysis，and compared with the traditional method，which proved the theoretical feasibility of the proposed method. Finally，the effectiveness of the proposed method was verified by the experimental results，and it has better switching harmonic suppression effect compared with the traditional passive damping method.

shunt active power filter（SAPF）  /  LCL filter  /  active damping circuit  /  harmonics compensation
Dongdong CHEN, Shengqi ZHANG, Long XIAO. SAPF Harmonic Detection Method Based on Triangle Orthogonal Principle[J]. Electric Drive, 2024 , 54 (9) : 26 -31 . DOI: 10.19457/j.1001-2095.dqcd24830
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Year 2024 volume 54 Issue 9
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Article Info
doi: 10.19457/j.1001-2095.dqcd24830
  • Receive Date：2022-12-02
  • Online Date：2025-11-05
  • Published：2024-09-20
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History
  • Received：2022-12-02
  • Revised：2023-01-13
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Affiliations
    1 College of Electrical Engineering and Automation， Fuzhou University， Fuzhou 350108，Fujian， China
    2 School of Electronic and Electrical Engineering， Minnan University of Science and Technology， Quanzhou 362700，Fujian， China
    3 Key Laboratory of Industrial Automation Control Technology and Application of Fujian Higher Education， Quanzhou 362700，Fujian， China
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