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<p>The growing demand for efficient and dependable power transmission systems has accelerated the usage of voltage source converters (VSC). Despite developments, tuning proportional-integral (PI) controllers in VSC systems remains difficult due to challenges such as time delays, noise filters, and other time domain characteristics of the system. The present literature provides limited information on effective PI tuning strategies, where precise control is required to ensure system stability and dynamic performance. This work addresses the issue of selecting the appropriate PI tuning procedures by doing a thorough analysis of existing techniques and providing unique approaches designed specifically for VSC-based systems. The modulus optimum (MO), symmetrical optimum (SO), and pole placement (PP) approaches are all tested both in MATLAB/Simulink and PSCAD/EMTDC for their efficacy in enhancing system response and stability of various control loops. The proposed contributions are aimed at improving these techniques in order to address limitations encountered in practical VSC-based systems. The studies performed in this work have found that the proposed approaches considerably improved the performance of VSC-based systems. For the case of tuning the current control loop, the maximum overshoot is reduced approximately by 10%. While, in the power control loop, rise time as well as settling time reduce by almost 11%. In particular, the MO, SO and PP approaches outperform classic PI tuning strategies in terms of dynamic response, overshoot reduction, and disturbance rejection. </p>

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Comprehensive analysis of PI tuning techniques for VSC applications

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年6月11日

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  • Hasan Alrajhi,
  • Yazeed Al-Harbi,
  • Ahmed Al-Zahrani,
  • Syed A. Raza,
  • Amil Daraz,
  • Mashial Al-Kaabi

摘要

The growing demand for efficient and dependable power transmission systems has accelerated the usage of voltage source converters (VSC). Despite developments, tuning proportional-integral (PI) controllers in VSC systems remains difficult due to challenges such as time delays, noise filters, and other time domain characteristics of the system. The present literature provides limited information on effective PI tuning strategies, where precise control is required to ensure system stability and dynamic performance. This work addresses the issue of selecting the appropriate PI tuning procedures by doing a thorough analysis of existing techniques and providing unique approaches designed specifically for VSC-based systems. The modulus optimum (MO), symmetrical optimum (SO), and pole placement (PP) approaches are all tested both in MATLAB/Simulink and PSCAD/EMTDC for their efficacy in enhancing system response and stability of various control loops. The proposed contributions are aimed at improving these techniques in order to address limitations encountered in practical VSC-based systems. The studies performed in this work have found that the proposed approaches considerably improved the performance of VSC-based systems. For the case of tuning the current control loop, the maximum overshoot is reduced approximately by 10%. While, in the power control loop, rise time as well as settling time reduce by almost 11%. In particular, the MO, SO and PP approaches outperform classic PI tuning strategies in terms of dynamic response, overshoot reduction, and disturbance rejection.