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A Novel Control Strategy for Grid-Connected Inverter Based on Iterative Calculation of Structural Parameters

Author

Listed:
  • Zhenao Sun

    (School of Information Science and Engineering, Northeastern University, Shenyang 110819, China)

  • Dazhi Wang

    (School of Information Science and Engineering, Northeastern University, Shenyang 110819, China)

  • Tianqing Yuan

    (School of Information Science and Engineering, Northeastern University, Shenyang 110819, China)

  • Zairan Liu

    (School of Information Science and Engineering, Northeastern University, Shenyang 110819, China)

  • Jiahui Yu

    (School of Information Science and Engineering, Northeastern University, Shenyang 110819, China)

Abstract

A novel control strategy that is based on iterative calculation of structural parameters is proposed for grid-connected inverter in this paper. The proposed strategy has a good dynamic performance, which makes it particularly suitable for the application of PV grid-connected generation. First, a second-order discretization mathematical model of grid-connected inverter control is established in the dq frame. The corresponding relation between the control signal and the output current is deduced in formulas. Then, the values of structural parameters in the formulas can be obtained through iterative calculation, which can further reduce the amount of calculation. After several iteration cycles, the structural parameters are approximately equal to their actual values and the inverter can be controlled as an open-loop system with its dynamic performance optimized. At last, simulation and experiments are performed. The results show that the static performance of the proposed strategy is as good as that of the classical ones, but its dynamic performance is improved significantly.

Suggested Citation

  • Zhenao Sun & Dazhi Wang & Tianqing Yuan & Zairan Liu & Jiahui Yu, 2018. "A Novel Control Strategy for Grid-Connected Inverter Based on Iterative Calculation of Structural Parameters," Energies, MDPI, vol. 11(12), pages 1-16, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3306-:d:185826
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    Citations

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    Cited by:

    1. Xuesong Zhou & Jiayao Wang & Youjie Ma, 2020. "Linear Active Disturbance Rejection Control of Grid-Connected Photovoltaic Inverter Based on Deviation Control Principle," Energies, MDPI, vol. 13(15), pages 1-29, July.
    2. Youjie Ma & Xia Yang & Xuesong Zhou & Luyong Yang & Yongliang Zhou, 2020. "Dual Closed-Loop Linear Active Disturbance Rejection Control of Grid-Side Converter of Permanent Magnet Direct-Drive Wind Turbine," Energies, MDPI, vol. 13(5), pages 1-21, March.

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