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Control Strategy of Microgrid Inverter Based on H ∞ State Feedback Repeated Deadbeat Control

Author

Listed:
  • Ren Xie
  • Yougui Guo
  • Yonghong Lan

Abstract

Aiming at the voltage distortion at the microgrid public connection point caused by nonlinear loads, a H ∞ state feedback deadbeat repetitive control strategy is proposed to rectify the total harmonic distortion of the output voltage. Firstly, through establishing the state space of the repetitive controller, introducing state feedback, combining the H ∞ control theory, and reformulating the system stability problem as a convex optimization problem with a set of linear matrix inequality (LMI) constraints to be solved, high stability control accuracy can be guaranteed and antiharmonic interference strengthened. Secondly, by introducing deadbeat control technology to improve the transient response speed of the system, changes in output voltage caused by load changes can be quickly compensated. Compared with the existing methods, the designed control method has the advantages of good stability, low harmonic content, and fast convergence speed, and the results are easier to verify. Finally, the simulation verifies the effectiveness of the proposed control strategy.

Suggested Citation

  • Ren Xie & Yougui Guo & Yonghong Lan, 2021. "Control Strategy of Microgrid Inverter Based on H ∞ State Feedback Repeated Deadbeat Control," Mathematical Problems in Engineering, Hindawi, vol. 2021, pages 1-11, December.
    • Handle: RePEc:hin:jnlmpe:8324926
    DOI: 10.1155/2021/8324926
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