D15.1 - Decentralized Interleaving of Series-Stacked DC-DC Converters via Extremum-Seeking Control

Thursday, March 20, 2025

11:30 AM – 1:30 PM ET

Location: Level One, Hall A3

Technical Dialogue Presenter(s)

Ivan Petric (he/him/his)

Hanwha Q CELLS Technologies, Inc

Presentation Paper

Co-Author(s)

VI

Vignesh Iyer

University of Colorado Boulder
SH

Shoudong Hu

University of Colorado Boulder
Chirayu Rajpurohit (he/him/his)

Generac Power Systems
BS

Bailey Sauter

University of Colorado Boulder
MI

Milan Ilic

Hanwha Q CELLS Technologies, Inc
LC

Luca Corradini

University of Colorado Boulder
Dragan Maksimovic, PhD (he/him/his)

University of Colorado Boulder

This work introduces a fully decentralized solution for optimal interleaving of series-stacked power converters based on distributed, module-level extremum-seeking controllers. The obtained switching-cycle-level synchronization minimizes the switching ripple, thus enabling a drastic passive filter size reduction. The proposed control system is model-free, simple to design and implement, and offers a continuous synchronizing action that rejects the impact of clock drifts. The algorithm is verified in simulations and experiments, for a dc series-stacked architecture with up to 7 modules.