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Model Predictive Voltage Control of Uninterruptible Power Supply Based on Extended-State Observer

Author

Listed:
  • Guofeng He

    (School of Electrical and Control Engineering, Henan University of Urban Construction, Pingdingshan 467036, China
    College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China)

  • Shicheng Zheng

    (School of Electrical and Control Engineering, Henan University of Urban Construction, Pingdingshan 467036, China
    College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China)

  • Yanfei Dong

    (School of Electrical and Control Engineering, Henan University of Urban Construction, Pingdingshan 467036, China
    College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China)

  • Guojiao Li

    (School of Electrical and Control Engineering, Henan University of Urban Construction, Pingdingshan 467036, China
    College of Electrical Engineering & New Energy, China Three Gorges University, Yichang 443002, China)

  • Wenjie Zhang

    (School of Electrical and Control Engineering, Henan University of Urban Construction, Pingdingshan 467036, China)

Abstract

Finite-set model predictive controls have been widely used in inverter control because of the flexible target control and no need of a modulation unit. However, the mismatching of prediction model parameters produces prediction errors, resulting in a significant decline in the performance of finite-set model predictive controls. Aiming at the problem of model parameter mismatch, an extended-state observer was proposed to accurately estimate the disturbance of the system in this paper, and the obtained disturbance value was added to a finite-set model predictive control controller to compensate for the prediction error and achieve parameter robustness. By constructing a prediction model of the inverter output voltage in αβ coordinates, all the possible output voltage values were predicted by using different voltage vectors and system measurement values. A set of voltage vectors that minimized the cost function was selected, and its corresponding switching state was applied to the inverter in the next sampling period to achieve control of the output voltage quality. Both the simulation and experimental results showed that the finite-set model predictive voltage control method based on the extended-state observer can estimate the total disturbance quickly and accurately, suppress the influence of capacitance parameter disturbance, and improve the control effect of an inverter.

Suggested Citation

  • Guofeng He & Shicheng Zheng & Yanfei Dong & Guojiao Li & Wenjie Zhang, 2022. "Model Predictive Voltage Control of Uninterruptible Power Supply Based on Extended-State Observer," Energies, MDPI, vol. 15(15), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5489-:d:874838
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    References listed on IDEAS

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    1. Yahya Danayiyen & Kyungsuk Lee & Minho Choi & Young Il Lee, 2019. "Model Predictive Control of Uninterruptible Power Supply with Robust Disturbance Observer," Energies, MDPI, vol. 12(15), pages 1-22, July.
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    Cited by:

    1. Marcio L. M. Amorim & Gabriel Augusto Ginja & João Paulo Carmo & Melkzedekue Moraes Alcântara Moreira & Adriano Almeida Goncalves Siqueira & Jose A. Afonso, 2022. "Low-Cost/High-Precision Smart Power Supply for Data Loggers," Energies, MDPI, vol. 16(1), pages 1-27, December.

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