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Robustness Improvement of Superconducting Magnetic Energy Storage System in Microgrids Using an Energy Shaping Passivity-Based Control Strategy

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  • Rui Hou

    (Department of Electrical Engineering, Incheon National University, (Songdo-dong)119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea
    School of Information and Electrical Engineering, Harbin Institute of Technology at Weihai, No.2 in Wenhua Xi Road, Weihai 264209, China)

  • Huihui Song

    (School of Information and Electrical Engineering, Harbin Institute of Technology at Weihai, No.2 in Wenhua Xi Road, Weihai 264209, China)

  • Thai-Thanh Nguyen

    (Department of Electrical Engineering, Incheon National University, (Songdo-dong)119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea)

  • Yanbin Qu

    (School of Information and Electrical Engineering, Harbin Institute of Technology at Weihai, No.2 in Wenhua Xi Road, Weihai 264209, China)

  • Hak-Man Kim

    (Department of Electrical Engineering, Incheon National University, (Songdo-dong)119 Academy-ro, Yeonsu-gu, Incheon 22012, Korea)

Abstract

Superconducting magnetic energy storage (SMES) systems, in which the proportional-integral (PI) method is usually used to control the SMESs, have been used in microgrids for improving the control performance. However, the robustness of PI-based SMES controllers may be unsatisfactory due to the high nonlinearity and coupling of the SMES system. In this study, the energy shaping passivity (ESP)-based control strategy, which is a novel nonlinear control based on the methodology of interconnection and damping assignment (IDA), is proposed for robustness improvement of SMES systems. A step-by-step design of the ESP-based method considering the robustness of SMES systems is presented. A comparative analysis of the performance between ESP-based and PI control strategies is shown. Simulation and experimental results prove that the ESP-based strategy achieves the stronger robustness toward the system parameter uncertainties than the conventional PI control. Besides, the use of ESP-based control method can reduce the eddy current losses of a SMES system due to the significant reduction of 2nd and 3rd harmonics of superconducting coil DC current.

Suggested Citation

  • Rui Hou & Huihui Song & Thai-Thanh Nguyen & Yanbin Qu & Hak-Man Kim, 2017. "Robustness Improvement of Superconducting Magnetic Energy Storage System in Microgrids Using an Energy Shaping Passivity-Based Control Strategy," Energies, MDPI, vol. 10(5), pages 1-23, May.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:5:p:671-:d:98279
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    References listed on IDEAS

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    1. Xiaochao Hou & Yao Sun & Wenbin Yuan & Hua Han & Chaolu Zhong & Josep M. Guerrero, 2016. "Conventional P -ω/ Q-V Droop Control in Highly Resistive Line of Low-Voltage Converter-Based AC Microgrid," Energies, MDPI, vol. 9(11), pages 1-19, November.
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    Cited by:

    1. Pan Wu & Wentao Huang & Nengling Tai & Zhoujun Ma & Xiaodong Zheng & Yong Zhang, 2019. "A Multi-Layer Coordinated Control Scheme to Improve the Operation Friendliness of Grid-Connected Multiple Microgrids," Energies, MDPI, vol. 12(2), pages 1-21, January.
    2. Yajing Gao & Fushen Xue & Wenhai Yang & Yanping Sun & Yongjian Sun & Haifeng Liang & Peng Li, 2017. "A Three-Part Electricity Price Mechanism for Photovoltaic-Battery Energy Storage Power Plants Considering the Power Quality and Ancillary Service," Energies, MDPI, vol. 10(9), pages 1-21, August.
    3. Tao Li & Qiming Cheng & Weisha Sun & Lu Chen, 2017. "Grid-Connected Control Strategy of Five-level Inverter Based on Passive E-L Model," Energies, MDPI, vol. 10(10), pages 1-14, October.

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