Analysis of dc-Link Voltage Switching Ripple in Three-Phase PWM Inverters
AbstractThe three-phase voltage source inverter (VSI) is de facto standard in power conversion systems. To realize high power density systems, one of the items to be correctly addressed is the design and selection of the dc-link capacitor in relation to the voltage switching ripple. In this paper, effective formulas for designing the dc-link capacitor as a function of the switching voltage ripple amplitude are obtained, considering the operating conditions such as the modulation index and the output current amplitude. The calculations are obtained considering the requirements and restrictions referring to the high (switching)-frequency dc-link voltage ripple component. Analyses have been performed considering the dc source impedance (non-ideal dc voltage source at the switching frequency) and a balanced load. Analytical expressions are derived for the dc-link voltage switching ripple amplitude and its maximum value over the fundamental period. Different values of modulation index and output phase angle have been considered and different diagrams are presented. Analytical results were validated both by simulations and comprehensive experimental tests. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Vujacic, M.; Hammami, M.; Srndovic, M.; Grandi, G. Analysis of dc-Link Voltage Switching Ripple in Three-Phase PWM Inverters. Energies 2018, 11, 471.
Vujacic M, Hammami M, Srndovic M, Grandi G. Analysis of dc-Link Voltage Switching Ripple in Three-Phase PWM Inverters. Energies. 2018; 11(2):471.Chicago/Turabian Style
Vujacic, Marija; Hammami, Manel; Srndovic, Milan; Grandi, Gabriele. 2018. "Analysis of dc-Link Voltage Switching Ripple in Three-Phase PWM Inverters." Energies 11, no. 2: 471.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.