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Fast Prediction of Characteristics in Wound Rotor Synchronous Condenser Using Subdomain Modeling

Author

Listed:
  • Manh-Dung Nguyen

    (Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea)

  • Tae-Seong Kim

    (Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea)

  • Kyung-Hun Shin

    (Department of Electrical Engineering, Changwon National University, Changwon 51140, Republic of Korea)

  • Gang-Hyeon Jang

    (Convergence Technology Laboratory, Korea Electric Power Research Institute, Daejeon 34056, Republic of Korea)

  • Jang-Young Choi

    (Department of Electrical Engineering, Chungnam National University, Daejeon 34134, Republic of Korea)

Abstract

Wound rotor synchronous condensers (WRSCs) are DC-excited rotor machines that utilize rotor winding instead of permanent magnets. Their voltage regulator controls the rotor field to generate or absorb reactive power, thereby regulating grid voltage or improving power factor. A key characteristic of a WRSC is the compounding curve, which shows the required rotor current under specific stator current and voltage conditions. This paper presents an approach for quickly calculating the electromagnetic parameters of a WRSC using a mathematical method. After determining magnetic flux density, induced voltage, and inductance through analytical methods, the Park and Clarke transformations are applied to derive the dq -frame quantities, enabling prediction of active and reactive powers and compounding curve characteristics. The 60 Hz model was evaluated through comparison with finite element method (FEM) simulations. Results of flux density, induced voltage, and the compounding curve under varying rotor and stator current conditions showed that the proposed method achieved comparable performance to FEM simulation while reducing computational time by half.

Suggested Citation

  • Manh-Dung Nguyen & Tae-Seong Kim & Kyung-Hun Shin & Gang-Hyeon Jang & Jang-Young Choi, 2024. "Fast Prediction of Characteristics in Wound Rotor Synchronous Condenser Using Subdomain Modeling," Mathematics, MDPI, vol. 12(22), pages 1-13, November.
  • Handle: RePEc:gam:jmathe:v:12:y:2024:i:22:p:3526-:d:1518853
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    References listed on IDEAS

    as
    1. Zican Tao & Tao Wang & Defu Cai & Rusi Chen, 2024. "Research on Reactive Power Optimization of Synchronous Condensers in HVDC Transmission Based on Reactive Power Conversion Factor," Energies, MDPI, vol. 17(17), pages 1-16, August.
    2. Manh-Dung Nguyen & Woo-Sung Jung & Duy-Tinh Hoang & Yong-Joo Kim & Kyung-Hun Shin & Jang-Young Choi, 2024. "Fast Analysis and Optimization of a Magnetic Gear Based on Subdomain Modeling," Mathematics, MDPI, vol. 12(18), pages 1-18, September.
    3. Hamid Soleimani & Daryoush Habibi & Mehrdad Ghahramani & Asma Aziz, 2024. "Strengthening Power Systems for Net Zero: A Review of the Role of Synchronous Condensers and Emerging Challenges," Energies, MDPI, vol. 17(13), pages 1-23, July.
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