December 2023

Conference Paper

DC-Ripple-Energy Adaptive-Minimization (DREAM) Modulation Scheme for a High Power Density Inverter

By:
Xue, Lingxiao ; Su, Gui-Jia ; Ozpineci, Burak
Page Number:
186-191
Issue Number:
x
Book Title:
2021 IEEE Applied Power Electronics Conference and Exposition (APEC)
Publication Date:
December 27, 2023
Publisher Location:
IEEE, District of Columbia, United States of America
Conference Name:
2021 IEEE Applied Power Electronics Conference and Exposition (APEC)
Conference Location:
Phoenix, Arizona, United States of America
Conference Sponsor:
IAS, PELS, PSMA
View DOI Listing:
https://doi.org/10.1109/APEC42165.2021.9487324

Abstract

The DC bus capacitor is one of the major power-density and reliability hurdles of electric drive systems. It is hard to shrink because it is constrained by the DC bus RMS ripple current, which is only load dependent. A dual-inverter based segmented drive can reduce the ripple current by ~50% compared to a non-segmented case. This paper analyzes the origin of this ripple current and points out the path for minimization. An optimal DC-ripple-energy adaptive-minimization (DREAM) modulation method is proposed to further reduce the ripple current. It is observed in experimental results that the proposed method can achieve additional 38% reduction over the traditional segmented drive system.


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