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Adaptive Fractional Delay Repetitive Control of LCL-type Active Power Filter Based on IIR Approximation
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Jijin XIE1, 2, 4, Wendong HUANG1, Kang SHEN1, Bin LIU3, Ningjia MENG1, 2, 4, Yuanyuan ZHANG1
Electric Drive | 2025, 55(5) : 3 - 12
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Electric Drive | 2025, 55(5): 3-12
Adaptive Fractional Delay Repetitive Control of LCL-type Active Power Filter Based on IIR Approximation
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Jijin XIE1, 2, 4, Wendong HUANG1, Kang SHEN1, Bin LIU3, Ningjia MENG1, 2, 4, Yuanyuan ZHANG1
Affiliations
  • 1 School of Mechanical and Marine Engineering，Beibu Gulf University，Qinzhou 535011，Guangxi，China
  • 2 Guangxi Key Laboratory of Ocean Engineering Equipment and Technology，Qinzhou 535011，Guangxi，China
  • 3 School of Information Engineering，Nanchang Hangkong University，Nanchang 330063，Jiangxi，China
  • 4 Guangxi Key Laboratory of Beibu Gulf Offshore Engineering Equipment and Technology，Qinzhou 535011，Guangxi，China
Published: 2025-05-20 doi: 10.19457/j.1001-2095.dqcd25615
Outline
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In order to improve the compensation effect of LCL-type shunt active power filter，a frequency adaptive decimal delay repetitive control based on IIR filter was proposed. The resonance suppression loop of LCL was designed through root locus and the design result was used as a new control object for repetitive control. The IIR filter used could approximate the decimal delay caused by frequency changes，thereby matching the resonant frequency of repetitive control with the fundamental and harmonic frequencies of the power grid. The adaptive implementation diagram，the phase characteristics of the approximation part，and the design method of the compensator in sequence were presented. Finally，the stabilities of the system were analyzed. Simulation and experimental verification show that the proposed method can improve the steady-state tracking performance and THD of the system.

active damping  /  approximation  /  repetitive control  /  maximum flat group delay  /  harmonic
Jijin XIE, Wendong HUANG, Kang SHEN, Bin LIU, Ningjia MENG, Yuanyuan ZHANG. Adaptive Fractional Delay Repetitive Control of LCL-type Active Power Filter Based on IIR Approximation[J]. Electric Drive, 2025 , 55 (5) : 3 -12 . DOI: 10.19457/j.1001-2095.dqcd25615
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Year 2025 volume 55 Issue 5
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Article Info
doi: 10.19457/j.1001-2095.dqcd25615
  • Receive Date：2024-01-20
  • Online Date：2025-11-05
  • Published：2025-05-20
Article Data
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History
  • Received：2024-01-20
  • Revised：2024-02-20
Funding
Affiliations
    1 School of Mechanical and Marine Engineering，Beibu Gulf University，Qinzhou 535011，Guangxi，China
    2 Guangxi Key Laboratory of Ocean Engineering Equipment and Technology，Qinzhou 535011，Guangxi，China
    3 School of Information Engineering，Nanchang Hangkong University，Nanchang 330063，Jiangxi，China
    4 Guangxi Key Laboratory of Beibu Gulf Offshore Engineering Equipment and Technology，Qinzhou 535011，Guangxi，China
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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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