Decentralized Interleaving of Paralleled Dc-Dc Buck Converters

Brian Johnson, Mohit Sinha, Sairaj Dhople, Jason Poon, Miguel Rodriguez

Research output: Contribution to conferencePaper

6 Scopus Citations

Abstract

We present a decentralized control strategy that yields switch interleaving among parallel-connected dc-dc buck converters. The proposed method is based on the digital implementation of the dynamics of a nonlinear oscillator circuit as the controller. Each controller is fully decentralized, i.e., it only requires the locally measured output current to synthesize the pulse width modulation (PWM) carrier waveform and no communication between different controllers is needed. By virtue of the intrinsic electrical coupling between converters, the nonlinear oscillator-based controllers converge to an interleaved state with uniform phase-spacing across PWM carriers. To the knowledge of the authors, this work presents the first fully decentralized strategy for switch interleaving in paralleled dc-dc buck converters.
Original languageAmerican English
Number of pages6
DOIs
StatePublished - 2017
Event2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL) - Stanford, California
Duration: 9 Jul 201712 Jul 2017

Conference

Conference2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL)
CityStanford, California
Period9/07/1712/07/17

Bibliographical note

See NREL/CP-5D00-68307 for preprint

NREL Publication Number

  • NREL/CP-5D00-70299

Keywords

  • buck converter
  • carrier waveform
  • controller
  • dc dc converter
  • nonlinear oscillator
  • pulse width modulation

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