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Design of a Four-Branch LCL -Type Grid-Connecting Interface for a Three-Phase, Four-Leg Active Power Filter

Author

Listed:
  • Wu Cao

    (School of Electrical Engineering, Southeast University, No 2 Si Pai Lou, Nanjing 210096, China)

  • Kangli Liu

    (School of Electrical Engineering, Southeast University, No 2 Si Pai Lou, Nanjing 210096, China)

  • Yongchao Ji

    (School of Electrical Engineering, Southeast University, No 2 Si Pai Lou, Nanjing 210096, China)

  • Yigang Wang

    (School of Electrical Engineering, Southeast University, No 2 Si Pai Lou, Nanjing 210096, China)

  • Jianfeng Zhao

    (School of Electrical Engineering, Southeast University, No 2 Si Pai Lou, Nanjing 210096, China)

Abstract

Compared with the three-phase, two-split-capacitor active power filter (3P2C-APF), the three-phase, four-leg active power filter (3P4L-APF) has been widely used in three-phase, four-wire grid utility for power quality control due to its numerous advantages, such as higher current output capability, particularly in phase N, lower current and easier voltage control on the DC-side. However, designing the grid-connecting interface, which is between the voltage source converter (VSC) and grid utility, is rather difficult due to the higher requirement for current ripple filtering in phase N, cross-coupling in four phases and lack of relevant design methodology and specification. In this paper, a four-branch LCL-type (4B-LCL) grid-connecting interface is proposed for 3P4L-APF, which features better current ripple filtering performance without decreasing the current output capability in all phases. First, this paper describes the mathematical models of 4B-LCL in the fully-complex-vector form from the zero and non-zero sequence perspective, resulting in two independent and uniform equivalent circuits without cross coupling terms. Then, the 4B-LCL parameter design method based on the most comprehensive performance index is proposed, including three main stages as the specification: performance index requirement determination, fulfillment of that requirement, and verification. Finally, the validity and effectiveness of the proposed design are proven by the simulated and experimental results of a 3P4L-APF with 4B-LCL .

Suggested Citation

  • Wu Cao & Kangli Liu & Yongchao Ji & Yigang Wang & Jianfeng Zhao, 2015. "Design of a Four-Branch LCL -Type Grid-Connecting Interface for a Three-Phase, Four-Leg Active Power Filter," Energies, MDPI, vol. 8(3), pages 1-22, February.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:3:p:1606-1627:d:46208
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    Citations

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    Cited by:

    1. Zhaoxu Luo & Mei Su & Jian Yang & Yao Sun & Xiaochao Hou & Josep M. Guerrero, 2016. "A Repetitive Control Scheme Aimed at Compensating the 6 k + 1 Harmonics for a Three-Phase Hybrid Active Filter," Energies, MDPI, vol. 9(10), pages 1-17, September.
    2. Yap Hoon & Mohd Amran Mohd Radzi & Mohd Khair Hassan & Nashiren Farzilah Mailah, 2017. "A Refined Self-Tuning Filter-Based Instantaneous Power Theory Algorithm for Indirect Current Controlled Three-Level Inverter-Based Shunt Active Power Filters under Non-sinusoidal Source Voltage Condit," Energies, MDPI, vol. 10(3), pages 1-21, February.
    3. Iman Lorzadeh & Hossein Askarian Abyaneh & Mehdi Savaghebi & Alireza Bakhshai & Josep M. Guerrero, 2016. "Capacitor Current Feedback-Based Active Resonance Damping Strategies for Digitally-Controlled Inductive-Capacitive-Inductive-Filtered Grid-Connected Inverters," Energies, MDPI, vol. 9(8), pages 1-32, August.
    4. Marwa Ben Said-Romdhane & Mohamed Wissem Naouar & Ilhem Slama Belkhodja & Eric Monmasson, 2017. "An Improved LCL Filter Design in Order to Ensure Stability without Damping and Despite Large Grid Impedance Variations," Energies, MDPI, vol. 10(3), pages 1-19, March.
    5. Yap Hoon & Mohd Amran Mohd Radzi & Mohd Khair Hassan & Nashiren Farzilah Mailah, 2017. "A Self-Tuning Filter-Based Adaptive Linear Neuron Approach for Operation of Three-Level Inverter-Based Shunt Active Power Filters under Non-Ideal Source Voltage Conditions," Energies, MDPI, vol. 10(5), pages 1-28, May.
    6. Muhammad Ammirrul Atiqi Mohd Zainuri & Mohd Amran Mohd Radzi & Azura Che Soh & Norman Mariun & Nasrudin Abd Rahim & Shahrooz Hajighorbani, 2016. "Fundamental Active Current Adaptive Linear Neural Networks for Photovoltaic Shunt Active Power Filters," Energies, MDPI, vol. 9(6), pages 1-20, May.

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