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Control of Three-Phase Two-Level Inverters: A Stochastic LPV Model Approach

Author

Listed:
  • Wensheng Luo

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Ruifang Zhang

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Jianwen Zhang

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Ligang Wu

    (School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China)

  • Sergio Vazquez

    (School of Engineering, University of Seville, 41092 Seville, Spain)

  • Leopoldo G. Franquelo

    (School of Engineering, University of Seville, 41092 Seville, Spain)

Abstract

This paper proposes a stochastic linear parameter-varying (LPV) model approach to design a state feedback controller for three-phase, two-level inverters. To deal with the parameter changes, stochastic noise, and delays faced by the inverter, it is modeled as a stochastic LPV system with time delay. Stability analysis and control synthesis are conducted for the LPV system. With parameter-dependent Lyapunov functionals, a condition of sufficient stability for asymptotical mean-square stability is obtained. In addition, the slack matrix technique is employed to improve the feasibility and reduce the conservatism of the conditions. The obtained theoretical results are applied to the three-phase, two-level inverter, whose currents are treated as state variables and are controlled to reach the equilibrium point. The simulation results validate the effectiveness of the proposed theories and demonstrate the advantages of using the slack matrix.

Suggested Citation

  • Wensheng Luo & Ruifang Zhang & Jianwen Zhang & Ligang Wu & Sergio Vazquez & Leopoldo G. Franquelo, 2024. "Control of Three-Phase Two-Level Inverters: A Stochastic LPV Model Approach," Energies, MDPI, vol. 17(23), pages 1-16, December.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:23:p:6142-:d:1537684
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    References listed on IDEAS

    as
    1. Mao, Xuerong, 1999. "Stability of stochastic differential equations with Markovian switching," Stochastic Processes and their Applications, Elsevier, vol. 79(1), pages 45-67, January.
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