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

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

Content Provider	MDPI
Author	Hammami, Manel Mandrioli, Riccardo Viatkin, Aleksandr Ricco, Mattia Grandi, Gabriele
Copyright Year	2020
Description	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.
Starting Page	5076
e-ISSN	19961073
DOI	10.3390/en13195076
Journal	Energies
Issue Number	19
Volume Number	13
Language	English
Publisher	MDPI
Publisher Date	2020-09-28
Access Restriction	Open
Subject Keyword	Energies Energy and Fuel Technology Inverter Voltage Source Inverter Three-phase Harmonic Distortion Current Unbalance Four-wire Split-capacitor Pulse Width Modulation Voltage Ripple Dc-link Switching Ripple
Content Type	Text
Resource Type	Article

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