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Grid-Connected Control Strategy of Five-level Inverter Based on Passive E-L Model

Author

Listed:
  • Tao Li

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

  • Qiming Cheng

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

  • Weisha Sun

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

  • Lu Chen

    (College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China)

Abstract

At present, the research on five-level inverters mainly involves the modulation algorithm and topology, and few articles study the five-level inverter from the control strategy. In this paper, the nonlinear passivity-based control (PBC) method is proposed for single-phase uninterruptible power supply inverters. The proposed PBC method is based on an energy shaping and damping injection idea, which is performed to regulate the energy flow of an inverter to a desired level and to assure global asymptotic stability, respectively. Furthermore, this paper presents a control algorithm based on the theory of passivity that gives an inverter in a photovoltaic system additional functions: power factor correction, harmonic currents compensation, and the ability to stabilize the system under varying injection damping. Finally, the effectiveness of the PBC method in terms of both stability and harmonic distortion is verified by the simulation and experiments under resistive and inductive loads.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:10:p:1657-:d:115688
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    References listed on IDEAS

    as
    1. 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.
    2. Yijia Cao & Yong Xu & Yong Li & Jiaqi Yu & Jingrong Yu, 2017. "A Lyapunov Stability Theory-Based Control Strategy for Three-Level Shunt Active Power Filter," Energies, MDPI, vol. 10(1), pages 1-19, January.
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