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Research on Oscillation Suppression Methods in Shunt Active Power Filter System

Author

Listed:
  • Rui Hou

    (School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266525, China)

  • Pengfei Wang

    (School of Information and Control Engineering, Qingdao University of Technology, Qingdao 266525, China)

  • Jian Wu

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Dianguo Xu

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

Abstract

The shunt active power filter (SAPF) system oscillation is a massive threat to the security and stability of the power grid. This study classifies SAPF oscillation into two categories according to the difference in mechanisms. The SAPF oscillation in one category is caused by the resonant characteristics of a switching noise filter and is called external loop amplification. The SAPF oscillation in the other category is induced by the presence of a capacitor in the load current for SAPF and is called self-excited oscillation. Unlike previous studies, this study tried to reveal the internal relationship between the two kinds of SAPF oscillation, present a general shunt virtual-damping-based SAPF oscillation suppression strategy covering the previous resonant damping method, and provide the discrete domain stability criterion of the control system. The sampling frequency was at least six times the resonant frequency. The stability region was enlarged with an increase in the sampling frequency and narrowed with a rise in the resonant frequency. As to the harmful self-excited oscillation problem, this study proposes a composite control strategy combining selective harmonic compensation and grid-side current feedback. Moreover, this study considers the more general resistance–inductance–capacitance load situations and analyzes the stability of the SAPF–Thyristor Switched Capacitor (TSC) hybrid compensation system. Simulations and experiments demonstrated that the proposed compound control method can reduce the primary harmonics of the system by more than 90% and has a better oscillation suppression performance than previous suppression methods. In particular, if we selected the TSC series reactance rate following more than 6%, self-excited oscillation could usually be avoided.

Suggested Citation

  • Rui Hou & Pengfei Wang & Jian Wu & Dianguo Xu, 2022. "Research on Oscillation Suppression Methods in Shunt Active Power Filter System," Energies, MDPI, vol. 15(9), pages 1-19, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3125-:d:801626
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    References listed on IDEAS

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    1. Soumya Ranjan Das & Prakash Kumar Ray & Arun Kumar Sahoo & Somula Ramasubbareddy & Thanikanti Sudhakar Babu & Nallapaneni Manoj Kumar & Rajvikram Madurai Elavarasan & Lucian Mihet-Popa, 2021. "A Comprehensive Survey on Different Control Strategies and Applications of Active Power Filters for Power Quality Improvement," Energies, MDPI, vol. 14(15), pages 1-32, July.
    2. Yuqi Bing & Daozhuo Jiang & Yiqiao Liang & Chongxi Jiang & Tianxiang He & Lei Yang & Pengfei Hu, 2019. "Modified Modeling and System Stabilization of Shunt Active Power Filter Compensating Loads with μF Capacitance," Energies, MDPI, vol. 12(11), pages 1-19, May.
    3. Sarawut Janpong & Kongpol Areerak & Kongpan Areerak, 2021. "Harmonic Detection for Shunt Active Power Filter Using ADALINE Neural Network," Energies, MDPI, vol. 14(14), pages 1-21, July.
    4. Agata Bielecka & Daniel Wojciechowski, 2021. "Stability Analysis of Shunt Active Power Filter with Predictive Closed-Loop Control of Supply Current," Energies, MDPI, vol. 14(8), pages 1-17, April.
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