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PIDR Sliding Mode Current Control with Online Inductance Estimator for VSC-MVDC System Converter Stations under Unbalanced Grid Voltage Conditions

Author

Listed:
  • Weipeng Yang

    (School of Electrical Engineering, Xi’an Jiaotong University, No.28, West Xianning Road, Xi’an 710049, China)

  • Hang Zhang

    (School of Electrical Engineering, Xi’an Jiaotong University, No.28, West Xianning Road, Xi’an 710049, China)

  • Jungang Li

    (Xuji Group Corporation, State Grid Corporation of China, No.1298, Xuji Road, Xuchang 461000, China)

  • Aimin Zhang

    (School of Electrical Engineering, Xi’an Jiaotong University, No.28, West Xianning Road, Xi’an 710049, China)

  • Yunhong Zhou

    (School of Electrical Engineering, Xi’an Jiaotong University, No.28, West Xianning Road, Xi’an 710049, China)

  • Jianhua Wang

    (School of Electrical Engineering, Xi’an Jiaotong University, No.28, West Xianning Road, Xi’an 710049, China)

Abstract

This study aims to present a novel proportional-integral-derivative-resonant law-based sliding mode current control strategy with online inductance estimator (PIDR-SMCC-OIE) for voltage source converter medium voltage direct current (VSC-MVDC) system converter stations under unbalanced grid voltage conditions. A generalized current reference calculation method, by which the ratio of the amplitude of the active power ripple to that of the reactive power ripple can be continuously controlled without current distortion is presented. A dynamic model of the current control errors in the positive sequence synchronous reference frame is developed, and a PIDR law-based sliding mode current controller is designed, where derivatives of the current references are obtained by simple algebraic operations. An OIE adopting the dynamic filtering method and gradient algorithm is proposed to further improve system robustness. In this OIE, the converter pole voltages are obtained by computation utilizing the gate signals of the switching devices and the DC bus voltage, so that no additional voltage sensors are needed. To verify effectiveness of the PIDR-SMCC-OIE strategy, simulation studies on a two-terminal VSC-MVDC system are conducted in PSCAD/EMTDC. The results show it can provide satisfactory performance over a wide range of operating conditions.

Suggested Citation

  • Weipeng Yang & Hang Zhang & Jungang Li & Aimin Zhang & Yunhong Zhou & Jianhua Wang, 2018. "PIDR Sliding Mode Current Control with Online Inductance Estimator for VSC-MVDC System Converter Stations under Unbalanced Grid Voltage Conditions," Energies, MDPI, vol. 11(10), pages 1-20, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2599-:d:172871
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    References listed on IDEAS

    as
    1. Weipeng Yang & Aimin Zhang & Jungang Li & Guoqi Li & Hang Zhang & Jianhua Wang, 2017. "Integral Plus Resonant Sliding Mode Direct Power Control for VSC-HVDC Systems under Unbalanced Grid Voltage Conditions," Energies, MDPI, vol. 10(10), pages 1-17, October.
    2. Yanbo Che & Wenxun Li & Xialin Li & Jinhuan Zhou & Shengnan Li & Xinze Xi, 2017. "An Improved Coordinated Control Strategy for PV System Integration with VSC-MVDC Technology," Energies, MDPI, vol. 10(10), pages 1-14, October.
    3. Hadi Hosseini Kordkheili & Mahdi Banejad & Ali Akbarzadeh Kalat & Edris Pouresmaeil & João P. S. Catalão, 2018. "Direct-Lyapunov-Based Control Scheme for Voltage Regulation in a Three-Phase Islanded Microgrid with Renewable Energy Sources," Energies, MDPI, vol. 11(5), pages 1-18, May.
    4. Jundi Jia & Guangya Yang & Arne Hejde Nielsen, 2018. "Fault Analysis Method Considering Dual-Sequence Current Control of VSCs under Unbalanced Faults," Energies, MDPI, vol. 11(7), pages 1-17, June.
    5. Yu Zeng & Guibin Zou & Xiuyan Wei & Chenjun Sun & Lingtong Jiang, 2018. "A Novel Protection and Location Scheme for Pole-to-Pole Fault in MMC-MVDC Distribution Grid," Energies, MDPI, vol. 11(8), pages 1-17, August.
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    Cited by:

    1. Chujia Guo & Aimin Zhang & Hang Zhang & Lei Zhang, 2018. "Adaptive Backstepping Control with Online Parameter Estimator for a Plug-and-Play Parallel Converter System in a Power Switcher," Energies, MDPI, vol. 11(12), pages 1-18, December.

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