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Analysis of Input Voltage Switching Ripple in Three-Phase Four-Wire Split Capacitor PWM Inverters

Author

Listed:
  • Manel Hammami

    (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)

  • Aleksandr Viatkin

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

  • Mattia Ricco

    (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

Three-phase, four-wire split capacitor inverters are currently employed in many applications, such as photovoltaic systems, battery chargers for electric vehicles, active power filters, and, in general, in all grid-tied applications that deal with possible grid voltage and/or current unbalances. This paper provides a comprehensive evaluation of the capacitor-switching voltage ripple and dc-link switching voltage ripple for the three-phase, four-wire, split capacitor inverters. Specifically, analytical formulations of the peak-to-peak and rms values of the voltage ripples are originally pointed out in this paper and determined in the case of balanced three-phase and unbalanced (two-phase and single-phase) output (ac) currents. The obtained results can help in designing the considered inverter and sizing of the dc-link capacitors. Reference is made to the sinusoidal PWM modulation and sinusoidal three-phase output currents with an almost unity power factor, representing a grid-connected application. Extensive numerical simulations have been carried out to thoroughly verify all the analytical developments presented in this paper. Furthermore, some experimental tests, having balanced output currents on the ac side, have been accomplished, validating numerical simulations and analytical developments.

Suggested Citation

  • Manel Hammami & Riccardo Mandrioli & Aleksandr Viatkin & Mattia Ricco & Gabriele Grandi, 2020. "Analysis of Input Voltage Switching Ripple in Three-Phase Four-Wire Split Capacitor PWM Inverters," Energies, MDPI, vol. 13(19), pages 1-21, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5076-:d:421072
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    References listed on IDEAS

    as
    1. Marija Vujacic & Manel Hammami & Milan Srndovic & Gabriele Grandi, 2018. "Analysis of dc-Link Voltage Switching Ripple in Three-Phase PWM Inverters," Energies, MDPI, vol. 11(2), pages 1-14, February.
    2. 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.
    3. Riccardo Mandrioli & Aleksandr Viatkin & Manel Hammami & Mattia Ricco & Gabriele Grandi, 2020. "A Comprehensive AC Current Ripple Analysis and Performance Enhancement via Discontinuous PWM in Three-Phase Four-Leg Grid-Connected Inverters," Energies, MDPI, vol. 13(17), pages 1-32, August.
    4. Gabriele Grandi & Jelena Loncarski & Milan Srndovic, 2016. "Analysis and Minimization of Output Current Ripple for Discontinuous Pulse-Width Modulation Techniques in Three-Phase Inverters," Energies, MDPI, vol. 9(5), pages 1-23, May.
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    1. 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.

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