Minimum Distortion Point Tracking: Optimal Phase Shifting for Input- or Output-Parallel Connected DC-DC Converters

Jason Poon, Brian B. Johnson, Sairaj V. Dhople, Seth R. Sanders

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

This paper introduces the notion of minimum distortion point tracking (MDPT): a control paradigm for input- or output-parallel connected dc-dc converters where switching waveforms are optimally phase shifted to minimize the total dc-bus ripple power. In a sense, MDPT generalizes the ubiquitous concept of interleaving in balanced multiphase dc-dc converters to a broad class of asymmetric input- or output-parallel connected dc-dc converters. Realizing power-quality improvement with control design implies that a drastic reduction in passive input or output filters can be achieved. This paper presents the mathematical characterization of the minimum distortion point (MDP) and a technique for MDPT. An experimental case study for three 600 W dc-dc converters demonstrates a 3× reduction in the bus voltage ripple, convergence to a static MDP in 40 ms, and the ability to dynamically track a time-varying MDP.

Original languageEnglish (US)
Title of host publication2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781538655412
DOIs
StatePublished - Sep 10 2018
Event19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018 - Padova, Italy
Duration: Jun 25 2018Jun 28 2018

Publication series

Name2018 IEEE 19th Workshop on Control and Modeling for Power Electronics, COMPEL 2018

Other

Other19th IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2018
CountryItaly
CityPadova
Period6/25/186/28/18

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