Comparison of CCTT split-winding and EE integrated magnetics for high-power DC-DC converters

  • Kevin J. Hartnett
  • , John G. Hayes
  • , Michael G. Egan
  • , Marek S. Rylko

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

This paper investigates integrated magnetic structures for high-power dc-dc converters. A novel CCTT split-winding integrated magnetic (IM) is introduced and is compared to a conventional EE IM structure. The CCTT IM allows for a reduction in external dc inductance in comparison to the EE design. This reduced dc inductance allows for a size/volume reduction. Low-power-loss ferrite is used and this results in a very efficient design. An IM design flowchart is presented which allows for quick CCTT and EE IM designs. The flow chart incorporates fringing equations to determine the dc and ac inductance of the IM structure, thus allowing for a more accurate design. The volume vs. efficiency for both magnetic structures is compared for various values of input current ripple. 3D FEA is used to fine tune the IM designs. High-power, 80 kW, experimental results validate the CCTT IM concept and show that the magnetic component is 99.7 % efficient over the input power range.

Original languageEnglish
Title of host publication2011 IEEE Vehicle Power and Propulsion Conference, VPPC 2011
DOIs
Publication statusPublished - 2011
Event7th IEEE Vehicle Power and Propulsion Conference, VPPC 2011 - Chicago, IL, United States
Duration: 6 Sep 20119 Sep 2011

Publication series

Name2011 IEEE Vehicle Power and Propulsion Conference, VPPC 2011

Conference

Conference7th IEEE Vehicle Power and Propulsion Conference, VPPC 2011
Country/TerritoryUnited States
CityChicago, IL
Period6/09/119/09/11

Keywords

  • Coupled Inductor
  • DC-DC Converter
  • Integrated Magnetic
  • Magnetic Design

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