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Modeling and Enhanced Error-Free Current Control Strategy for Inverter with Virtual Resistor Damping

Author

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  • Cheng Nie

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
    Key Laboratory of Shaanxi Smart Grid, Xi’an Jiaotong University, Xi’an 710049, China)

  • Yue Wang

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
    Key Laboratory of Shaanxi Smart Grid, Xi’an Jiaotong University, Xi’an 710049, China)

  • Wanjun Lei

    (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
    Key Laboratory of Shaanxi Smart Grid, Xi’an Jiaotong University, Xi’an 710049, China)

  • Tian Li

    (Key Laboratory of Shaanxi Smart Grid, Xi’an Jiaotong University, Xi’an 710049, China)

  • Shiyuan Yin

    (Key Laboratory of Shaanxi Smart Grid, Xi’an Jiaotong University, Xi’an 710049, China)

Abstract

In microgrid, the grid-connected inverter current with the LCL (inductor-capacitor-inductor) output filter is amplified at certain frequencies. Using virtual resistor damping method can help suppress the amplification. By choosing an appropriate virtual resistor value, the model of the inverter current control loop is simplified as a 2 nd -order lowpass filter. Based on such simplified model, this paper proposes a design method of reference current compensation controller, which does not require decomposition of harmonic components. With the reference compensation, the inverter output current control precision is improved obviously. The simulation and experimental results verify the accuracy of the inverter simplified model and effectiveness of the reference compensation design method.

Suggested Citation

  • Cheng Nie & Yue Wang & Wanjun Lei & Tian Li & Shiyuan Yin, 2018. "Modeling and Enhanced Error-Free Current Control Strategy for Inverter with Virtual Resistor Damping," Energies, MDPI, vol. 11(10), pages 1-15, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2499-:d:171106
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    References listed on IDEAS

    as
    1. 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.
    2. 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.
    3. Yanbin Li & Min Wu & Zhen Li, 2018. "A Real Options Analysis for Renewable Energy Investment Decisions under China Carbon Trading Market," Energies, MDPI, vol. 11(7), pages 1-10, July.
    4. Yitao Liu & Ching-Ming Lai, 2018. "LCL Filter Design with EMI Noise Consideration for Grid-Connected Inverter," Energies, MDPI, vol. 11(7), pages 1-14, June.
    5. Wei Jin & Yongli Li & Guangyu Sun & Lizhi Bu, 2017. "H∞ Repetitive Control Based on Active Damping with Reduced Computation Delay for LCL-Type Grid-Connected Inverters," Energies, MDPI, vol. 10(5), pages 1-19, April.
    6. Shiying Zhou & Xudong Zou & Donghai Zhu & Li Tong & Yong Kang, 2017. "Improved Capacitor Voltage Feedforward for Three-Phase LCL-Type Grid-Connected Converter to Suppress Start-Up Inrush Current," Energies, MDPI, vol. 10(5), pages 1-19, May.
    7. Alenka Hren & Franc Mihalič, 2018. "An Improved SPWM-Based Control with Over-Modulation Strategy of the Third Harmonic Elimination for a Single-Phase Inverter," Energies, MDPI, vol. 11(4), pages 1-20, April.
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    Cited by:

    1. Sen Zhang & Jianfeng Zhao & Zhihong Zhao & Kangli Liu & Pengyu Wang & Bin Yang, 2019. "Decoupled Current Controller Based on Reduced Order Generalized Integrator for Three-Phase Grid-Connected VSCs in Distributed System," Energies, MDPI, vol. 12(12), pages 1-15, June.

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