MSP-LEGO: Modular series-parallel (MSP) Architecture and LEGO building blocks for non-isolated high voltage conversion ratio hybrid DC-DC converters

Yueshi Guan, Ping Wang, Ming Liu, Dianguo Xu, Minjie Chen

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

Abstract

This paper presents a Modular Series-Parallel architecture and Linear Extendable Group Operated (MSP-LEGO) building blocks to achieve high efficiency and high power density in non-isolated high voltage conversion ratio dc-dc applications. Like other hybrid dc-dc solutions, the MSP-LEGO approach merges the strengths of switched-capacitor circuits and switched-inductor circuits, and facilitates series-input parallel-output configuration for balanced distribution of voltage stress and current sharing. The hybrid switched-capacitor-magnetics configuration enables zero-voltage-switching (ZVS) and near zero-current-switching (ZCS). The input voltage and output current of proposed architecture can be linearly extended through series-connected switched-capacitor circuits and parallel-connected switched-inductor circuits. A 100 W, 150 Vdc-to-5 Vdc non-isolated high conversion ratio hybrid dc-dc converter is built and tested. The prototype dc-dc converter achieved 110 W/in3 power density and 91.5% peak efficiency with automatic voltage balancing and current sharing.

Original languageEnglish (US)
Title of host publication2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages143-150
Number of pages8
ISBN (Electronic)9781728103952
DOIs
StatePublished - Sep 2019
Event11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States
Duration: Sep 29 2019Oct 3 2019

Publication series

Name2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
CountryUnited States
CityBaltimore
Period9/29/1910/3/19

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Control and Optimization
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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  • Cite this

    Guan, Y., Wang, P., Liu, M., Xu, D., & Chen, M. (2019). MSP-LEGO: Modular series-parallel (MSP) Architecture and LEGO building blocks for non-isolated high voltage conversion ratio hybrid DC-DC converters. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 143-150). [8912779] (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2019.8912779