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Capacitors Voltage Switching Ripple in Three-Phase Three-Level Neutral Point Clamped Inverters with Self-Balancing Carrier-Based Modulation

Author

Listed:
  • Manel Hammami

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, Italy)

  • Gabriele Rizzoli

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, Italy)

  • Riccardo Mandrioli

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, Italy)

  • Gabriele Grandi

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, 40136 Bologna, Italy)

Abstract

This paper provides a comprehensive analysis of the capacitors voltage switching ripple for three-phase three-level neutral point clamped (NPC) inverter topologies. The voltage ripple amplitudes of the two dc-link capacitors are theoretically estimated as a function of both amplitude and phase angle of output current and the inverter modulation index. In particular, peak-to-peak distribution and maximum amplitudes of the capacitor voltage switching ripple over the fundamental period are obtained. A comparison is made considering different carrier-based pulse-width modulations in the case of almost all sinusoidal load currents, representing either grid connection or passive load with a negligible current ripple. Based on the voltage switching ripple requirements of capacitors, a simple and effective original equation for a preliminary sizing of the capacitors has been proposed. Numerical simulations and experimental tests have been carried out in order to verify the analytical developments.

Suggested Citation

  • Manel Hammami & Gabriele Rizzoli & Riccardo Mandrioli & Gabriele Grandi, 2018. "Capacitors Voltage Switching Ripple in Three-Phase Three-Level Neutral Point Clamped Inverters with Self-Balancing Carrier-Based Modulation," Energies, MDPI, vol. 11(12), pages 1-20, November.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:12:p:3244-:d:184689
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    References listed on IDEAS

    as
    1. Marija Vujacic & Manel Hammami & Milan Srndovic & Gabriele Grandi, 2017. "Theoretical and Experimental Investigation of Switching Ripple in the DC-Link Voltage of Single-Phase H-Bridge PWM Inverters," Energies, MDPI, vol. 10(8), pages 1-16, August.
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    Cited by:

    1. Serhii Stepenko & Oleksandr Husev & Dmitri Vinnikov & Carlos Roncero-Clemente & Sergio Pires Pimentel & Elena Santasheva, 2019. "Experimental Comparison of Two-Level Full-SiC and Three-Level Si–SiC Quasi-Z-Source Inverters for PV Applications," Energies, MDPI, vol. 12(13), pages 1-17, June.
    2. Riccardo Mandrioli & Aleksandr Viatkin & Manel Hammami & Mattia Ricco & Gabriele Grandi, 2021. "Prediction of DC-Link Voltage Switching Ripple in Three-Phase Four-Leg PWM Inverters," Energies, MDPI, vol. 14(5), pages 1-26, March.
    3. Guo Chen & Chunyang Gong & Jun Bao & Lihua Zhu & Zhixin Wang, 2023. "Compensation-Voltage-Injection-Based Neutral-Point Voltage Fluctuation Suppression Method for NPC Converters," Energies, MDPI, vol. 16(11), pages 1-20, May.
    4. Guozheng Zhang & Bingxu Wei & Xin Gu & Xinmin Li & Zhanqing Zhou & Wei Chen, 2019. "Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction," Energies, MDPI, vol. 12(14), pages 1-16, July.
    5. Maosong Zhang & Ying Cui & Qunjing Wang & Jun Tao & Xiuqin Wang & Hongsheng Zhao & Guoli Li, 2019. "A Study on Neutral-Point Potential in Three-Level NPC Converters," Energies, MDPI, vol. 12(17), pages 1-22, September.
    6. Antonio Ventosa-Cutillas & Pablo Montero-Robina & Francisco Umbría & Federico Cuesta & Francisco Gordillo, 2019. "Integrated Control and Modulation for Three-Level NPC Rectifiers," Energies, MDPI, vol. 12(9), pages 1-15, April.

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