Effect of Unipolar and Bipolar SPWM on the Lifetime of DC-link Capacitors in Single-Phase Voltage Source Inverters

Silpa Baburajan*, Pooya Davari, Saeed Peyghami, Frede Blaabjerg, Dinesh Kumar

*Corresponding author

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

14 Downloads (Pure)

Abstract

This paper explores the impact of different modulation techniques on the lifetime of DC-link capacitors for different modulation indices and varying operating power of voltage source inverter system. The conducted analysis show that the capacitor lifetime improves when using unipolar Sinusoidal pulse-width modulation (SPWM), which introduces the highest lifetime for DC-link capacitors when a single unit voltage source inverter is used. Likewise, for two paralleled voltage source inverter unit’ topology, both units using unipolar SPWM, having the same switching frequency produces the least thermal stress on the capacitor and consequently giving the highest lifetime.
Original languageEnglish
Title of host publication2020 22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe
PublisherIEEE Signal Processing Society
Publication dateSep 2020
Article number9215656
ISBN (Electronic)9789075815368
DOIs
Publication statusPublished - Sep 2020
Event22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe - Lyon, France
Duration: 7 Sep 202011 Sep 2020

Conference

Conference22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe
CountryFrance
CityLyon
Period07/09/202011/09/2020
Series2020 22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe

Bibliographical note

Publisher Copyright:
© 2020 EPE Association.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • DC link capacitor
  • Lifetime Estimation
  • Parallel inverters
  • Harmonic Analysis
  • Pulse Width Modulation

Fingerprint Dive into the research topics of 'Effect of Unipolar and Bipolar SPWM on the Lifetime of DC-link Capacitors in Single-Phase Voltage Source Inverters'. Together they form a unique fingerprint.

Cite this