August 2024

Conference Paper

Predictive Control to Further Reduce DC-Link Capacitor Current Stress for Segmented Inverter

By:
Ribeiro, Pedro Eugenio M; Chowdhury, Md S; Su, Gui-Jia ; Ozpineci, Burak ; Galigekere, Veda Prakash
Page Number:
1-4
Book Title:
2024 IEEE Transportation Electrification Conference and Expo (ITEC)
Publication Date:
August 15, 2024
Publisher Location:
IEEE, New Jersey, United States of America
Conference Name:
2024 IEEE Transportation Electrification Conference and Expo (ITEC 2024)
Conference Location:
Chicago, Illinois, United States of America
Conference Sponsor:
IEEE
View DOI Listing:
https://doi.org/10.1109/ITEC60657.2024.10598853

Abstract

Two three-phase interleaved inverters have been used in traction drive applications to reduce the current stress in a DC link capacitor bank. In such applications, either carrier-based or space vector modulation is used to select the optimum switching sequences, and the results show 50% less capacitor current than that of a single three-phase inverter. The switching state selection process for this inverter is tedious, and there has been no research to find the optimal switching state. To overcome this challenge, this research employed a simple finite set model predictive control to select the optimum switching sequence for a dual three-phase interleaved topology, called a segmented inverter. The results show that the predictive control algorithm can provide a simple solution and can reduce the current stress by 27% compared with traditional modulation techniques for the segmented inverters.