Paralleling DC-DC switching converters by means of power gyrators

Angel Cid-Pastor, Luis Martinez-Salamero, Corinne Alonso, Ramon Leyva, Sigmund Singer

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, the problem of paralleling dc-dc switching converters is solved by means of power gyrators. The key element of the parallel connection is a buck converter with input filter acting as a power gyrator of type G with controlled output current, i.e., with its dc output current being proportional to its dc input voltage. electromagnetic interference minimization, current distribution among converters, stability, and voltage regulation are ensured by this approach. It is shown that a voltage regulator based on the parallel operation of power gyrators with democratic current sharing is always stable regardless of the number of connected modules. Experimental results of a dc-dc voltage regulator based on the parallel connection of three power gyrators with democratic current sharing are in perfect agreement with the theoretical predictions.

Original languageEnglish
Pages (from-to)2444-2453
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume22
Issue number6
DOIs
StatePublished - Nov 2007

Keywords

  • Converter paralleling
  • DC-DC power converters
  • Gyrators
  • Stability and voltage regulation
  • Switching converters
  • Voltage regulators

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