Decentralized Interleaving of Paralleled Dc-Dc Buck Converters

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

doi:10.1109/COMPEL.2017.8013331

Decentralized Interleaving of Paralleled Dc-Dc Buck Converters

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

Power Systems Engineering

Research output: Contribution to conference › Paper

7 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 language	American English
Number of pages	6
DOIs	https://doi.org/10.1109/COMPEL.2017.8013331
State	Published - 2017
Event	2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL) - Stanford, California Duration: 9 Jul 2017 → 12 Jul 2017

Conference

Conference	2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL)
City	Stanford, California
Period	9/07/17 → 12/07/17

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

Access to Document

10.1109/COMPEL.2017.8013331

Cite this

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title = "Decentralized Interleaving of Paralleled Dc-Dc Buck Converters",

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.",

keywords = "buck converter, carrier waveform, controller, dc dc converter, nonlinear oscillator, pulse width modulation",

author = "Brian Johnson and Mohit Sinha and Sairaj Dhople and Jason Poon and Miguel Rodriguez",

note = "See NREL/CP-5D00-68307 for preprint; 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL) ; Conference date: 09-07-2017 Through 12-07-2017",

year = "2017",

doi = "10.1109/COMPEL.2017.8013331",

language = "American English",

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T1 - Decentralized Interleaving of Paralleled Dc-Dc Buck Converters

AU - Johnson, Brian

AU - Sinha, Mohit

AU - Dhople, Sairaj

AU - Poon, Jason

AU - Rodriguez, Miguel

N1 - See NREL/CP-5D00-68307 for preprint

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - buck converter

KW - carrier waveform

KW - controller

KW - dc dc converter

KW - nonlinear oscillator

KW - pulse width modulation

U2 - 10.1109/COMPEL.2017.8013331

DO - 10.1109/COMPEL.2017.8013331

M3 - Paper

T2 - 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL)

Y2 - 9 July 2017 through 12 July 2017

ER -

Decentralized Interleaving of Paralleled Dc-Dc Buck Converters

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

Access to Document

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Cite this