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Analysis and Minimization of Output Current Ripple for Discontinuous Pulse-Width Modulation Techniques in Three-Phase Inverters

Author

Listed:
  • Gabriele Grandi

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale Risorgimento 2, Bologna 40136, Italy)

  • Jelena Loncarski

    (Department of Engineering Sciences, Ångström Laboratory, Uppsala University, Lägerhyddsvägen 1, Box 534, Uppsala S-751 21, Sweden)

  • Milan Srndovic

    (Department of Electrical, Electronic, and Information Engineering, University of Bologna, Viale Risorgimento 2, Bologna 40136, Italy)

Abstract

This paper gives the complete analysis of the output current ripple in three-phase voltage source inverters considering the different discontinuous pulse-width modulation (DPWM) strategies. In particular, peak-to-peak current ripple amplitude is analytically evaluated over the fundamental period and compared among the most used DPWMs, including positive and negative clamped (DPWM+ and DPWM−), and the four possible combinations between them, usually named as DPWM0, DPWM1, DPWM2, and DPWM3. The maximum and the average values of peak-to-peak current ripple are estimated, and a simple method to correlate the ripple envelope with the ripple rms is proposed and verified. Furthermore, all the results obtained by DPWMs are compared to the centered pulse-width modulation (CPWM, equivalent to the space vector modulation) to identify the optimal pulse-width modulation (PWM) strategy as a function of the modulation index, taking into account the different average switching frequency. In this way, the PWM technique providing for the minimum output current ripple is identified over the whole modulation range. The analytical developments and the main results are experimentally verified by current ripple measurements with a three-phase PWM inverter prototype supplying an induction motor load.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:5:p:380-:d:70364
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    References listed on IDEAS

    as
    1. Jelena Loncarski & Mats Leijon & Milan Srndovic & Claudio Rossi & Gabriele Grandi, 2015. "Comparison of Output Current Ripple in Single and Dual Three-Phase Inverters for Electric Vehicle Motor Drives," Energies, MDPI, vol. 8(5), pages 1-17, April.
    2. Jin-Hyuk Park & Hae-Gwang Jeong & Kyo-Beum Lee, 2013. "Output Current Ripple Reduction Algorithms for Home Energy Storage Systems," Energies, MDPI, vol. 6(10), pages 1-18, October.
    3. Gabriele Grandi & Jelena Loncarski, 2013. "Analysis of Peak-to-Peak Current Ripple Amplitude in Seven-Phase PWM Voltage Source Inverters," Energies, MDPI, vol. 6(9), pages 1-19, August.
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    Cited by:

    1. 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.
    2. 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.

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