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A Comparative Study of Direct Power Control Strategies for STATCOM Using Three-Level and Five-Level Diode-Clamped Inverters

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  • Diyaa Mustaf Mohammed

    (Electrical Engineering Technical College, Middle Technical University, Baghdad 10074, Iraq)

  • Raaed Faleh Hassan

    (Electrical Engineering Technical College, Middle Technical University, Baghdad 10074, Iraq)

  • Naseer M. Yasin

    (Electrical Engineering Technical College, Middle Technical University, Baghdad 10074, Iraq)

  • Mohammed Alruwaili

    (Department of Electrical Engineering, College of Engineering, Northern Border University, Arar 73213, Saudi Arabia)

  • Moustafa Ahmed Ibrahim

    (Electrical Engineering Department, University of Business and Technology, Jeddah 23435, Saudi Arabia)

Abstract

For power electronic interfaces, Direct Power Control (DPC) has emerged as a leading control technique, especially in applications such as synchronous motors, induction motors, and other electric drives; renewable energy sources (such as photovoltaic inverters and wind turbines); and converters that are grid-connected, such as Virtual Synchronous Generator (VSG) and Static Compensator (STATCOM) configurations. DPC accomplishes several significant goals by avoiding the inner current control loops and doing away with coordinating transformations. The application of STATCOM based on three- and five-level diode-clamped inverters is covered in this work. The study checks the abilities of DPC during power control adjustments during diverse grid operation scenarios while detailing how multilevel inverters affect system stability and power reliability. Proportional Integral (PI) controllers are used to control active and reactive power levels as part of the control approach. This study shows that combining DPC with Sinusoidal Pulse Width Modulation (SPWM) increases the system’s overall electromagnetic performance and control accuracy. The performance of STATCOM systems in power distribution and transient response under realistic operating conditions is assessed using simulation tools applied to three-level and five-level inverter topologies. In addition to providing improved voltage quality and accurate reactive power control, the five-level inverter structure surpasses other topologies by maintaining a total harmonic distortion (THD) below 5%, according to the main findings. The three-level inverter operates efficiently under typical grid conditions because of its straightforward design, which uses less processing power and computational complexity.

Suggested Citation

  • Diyaa Mustaf Mohammed & Raaed Faleh Hassan & Naseer M. Yasin & Mohammed Alruwaili & Moustafa Ahmed Ibrahim, 2025. "A Comparative Study of Direct Power Control Strategies for STATCOM Using Three-Level and Five-Level Diode-Clamped Inverters," Energies, MDPI, vol. 18(13), pages 1-25, July.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:13:p:3582-:d:1696536
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    References listed on IDEAS

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    1. Jun-Hao Chen & Kuang-Hsiung Tan & Yih-Der Lee, 2022. "Intelligent Controlled DSTATCOM for Power Quality Enhancement," Energies, MDPI, vol. 15(11), pages 1-19, May.
    2. Yusuf A. Alturki & Abdullah Ali Alhussainy & Sultan M. Alghamdi & Muhyaddin Rawa, 2024. "A Novel Point of Common Coupling Direct Power Control Method for Grid Integration of Renewable Energy Sources: Performance Evaluation among Power Quality Phenomena," Energies, MDPI, vol. 17(20), pages 1-18, October.
    3. Zouhaira Ben Mahmoud & Adel Khedher, 2024. "A Comprehensive Review on Space Vector Based-PWM Techniques for Common Mode Voltage Mitigation in Photovoltaic Multi-Level Inverters," Energies, MDPI, vol. 17(4), pages 1-33, February.
    4. Chaimae Dardabi & Santiago Cóbreces Álvarez & Abdelouahed Djebli, 2025. "An Artificial-Neural-Network-Based Direct Power Control Approach for Doubly Fed Induction Generators in Wind Power Systems," Energies, MDPI, vol. 18(8), pages 1-23, April.
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