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Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter

Author

Listed:
  • Rutian Wang

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Yuyang Wu

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Guoqing He

    (China Electric Power Research Institute, Beijing 100192, China)

  • Ying Lv

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Jiaxing Du

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

  • Yanhao Li

    (School of Electrical Engineering, Northeast Electric Power University, Jilin 132012, China)

Abstract

In this paper; the impedance model of PWM rectifier and LLC resonant converter are deduced, and the stability analysis of cascade system is studied. The principle of three-phase PWM rectifier is introduced; and the small signal model in d-q coordinate system is deduced. The expression of dc side output impedance model for PWM rectifier is derived. The LLC resonant converter is operated in a fixed-frequency state, and the LLC resonant converter is modeled as a small signal model. On this basis, the input impedance model expression of the LLC resonant converter is derived. According to the impedance stability criterion, it can seen that the amplitude of input impedance is greater than the amplitude of output impedance in a certain frequency domain. In addition, the Nyquist curve is not around the point (−1,0), which can judge that the cascade system is stable. In simulation software, a cascade system simulation is built and corresponding simulation curves are obtained, which verifies the stability of the cascade system.

Suggested Citation

  • Rutian Wang & Yuyang Wu & Guoqing He & Ying Lv & Jiaxing Du & Yanhao Li, 2018. "Impedance Modeling and Stability Analysis for Cascade System of Three-Phase PWM Rectifier and LLC Resonant Converter," Energies, MDPI, vol. 11(11), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:11:p:3050-:d:180932
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    References listed on IDEAS

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    1. Xianjin Huang & Dengwei Chang & Chao Ling & Trillion Q. Zheng, 2017. "Research on Single-Phase PWM Converter with Reverse Conducting IGBT Based on Loss Threshold Desaturation Control," Energies, MDPI, vol. 10(11), pages 1-17, November.
    2. Rosario Miceli & Giuseppe Schettino & Fabio Viola, 2018. "A Novel Computational Approach for Harmonic Mitigation in PV Systems with Single-Phase Five-Level CHBMI," Energies, MDPI, vol. 11(8), pages 1-20, August.
    3. Jinhaeng Jang & Syam Kumar Pidaparthy & Byungcho Choi, 2015. "Current Mode Control for LLC Series Resonant DC-to-DC Converters," Energies, MDPI, vol. 8(6), pages 1-16, June.
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    Cited by:

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    2. Matias Berg & Tomi Roinila, 2020. "Dynamic Effect of Input-Voltage Feedforward in Three-Phase Grid-Forming Inverters," Energies, MDPI, vol. 13(11), pages 1-16, June.
    3. Jerzy Zgraja & Grzegorz Lisowski & Jacek Kucharski, 2020. "Autonomous Energy Matching Control in an LLC Induction Heating Generator," Energies, MDPI, vol. 13(8), pages 1-18, April.
    4. Chien-Chun Huang & Sheng-Li Yao & Huang-Jen Chiu, 2020. "Stability Analysis and Optimal Design for Virtual Impedance of 48 V Server Power System for Data Center Applications," Energies, MDPI, vol. 13(20), pages 1-21, October.
    5. Haifeng Liang & Yuxi Huang & Hao Sun & Zhiqian Liu, 2019. "Research on Large-Signal Stability of DC Microgrid Based on Droop Control," Energies, MDPI, vol. 12(16), pages 1-14, August.

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