Design Constraints Generalization for Series-Stacked Buffer-Based Active DC Links

Pavel Strajnikov, Nissim Amar, Vladimir Yuhimenko, Ilan Aharon, Alon Kuperman

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Series-stacked buffer (SSB)-based active dc links aim to increase power density by replacing bulky dc link capacitor with series connection of significantly lower valued capacitor and auxiliary bidirectional dc/ac converter. SSB design constraint describing quantitative relation between passive components values and system power rating was established to achieve minimal remaining dc link voltage ripple magnitude. This letter generalizes the above requirement, revealing that allowing nonminimum magnitude of residual dc link voltage ripple releases other design constraints, yielding a more optimal solution in terms of full-rating capacitance utilized and/or auxiliary bidirectional dc/ac converter volt-ampere rating. Experimental results validate the proposed methodology, matching corresponding analytical predictions.

Original languageEnglish
Pages (from-to)2133-2136
Number of pages4
JournalIEEE Transactions on Industrial Electronics
Issue number2
StatePublished - 1 Feb 2024


  • Active dc link (ADCL)
  • reduced rating converter
  • series-stacked buffer (SSB)


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