NDLI: Total volume evaluation of high-power density non-isolated DC–DC converters with integrated magnetics for electric vehicles

Content Provider	IET Digital Library
Author	Martinez, Wilmar Cortes, Camilo Yamamoto, Masayoshi Imaoka, Jun Umetani, Kazuhiro
Abstract	One of the main problems in electric vehicles is the volume of their electrical systems because their bulky components carry additional mass and high cost to the total system. On this topic, interleaving-phases and magnetic coupling techniques have been reported as effective methods for increasing the power density of the DC–DC converters that work between the storage unit and the motor inverter. In that sense, a volume assessment of these topologies would provide a better understanding of the problems to be faced when an electric power train is designed. In this paper, a volume modelling methodology is introduced with the purpose of comparing four different DC–DC converters: Single-Phase Boost, Two-Phase Interleaved with non-coupled inductors, Loosely Coupled Inductor (LCI), and Integrated Winding Coupled Inductor (IWCI). The analysis considers the volume of magnetic components, power devices (conventional and next-generation), cooling devices and capacitors. The methodology can be used as a part of an optimization procedure to minimize the volume of DC–DC converters. Conclusively, LCI and IWCI were found effective to miniaturize power converters with a power density of 8.4 W/cc and 9.66 W/cc, respectively. Moreover, a maximum efficiency of 98.04% and 97.61% was obtained for a 1kW LCI and IWCI prototypes, respectively.
Starting Page	2010
Ending Page	2020
Page Count	11
ISSN	17554535
Volume Number	10
e-ISSN	17554543
Issue Number	Issue 14, Nov (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/10/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0157
Journal	IET Power Electronics
Publisher Date	2017-07-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.C. Machine Capacitor Cooling Cooling Device D.C. Machines DC-DC Power Converter Efficiency 97.61 Percent Efficiency 98.04 Percent Electric Motors Electric Power Train Electric Vehicle High-power Density Nonisolated DC-DC Converter Inductor Inductors And Transformer Integrated Magnetics Integrated Winding Coupled Inductor Interleaving-phase Technique Invertors IWCI LCI Loosely Coupled Inductor Machine Windings Magnetic Coupling Technique Magnetic Device Magnetic Material Application And Device Motor Inverter Optimisation Optimisation Technique Power Device Power Electronics Power Supply Product Packaging Single-phase Boost Two-phase Interleaved Noncoupled Inductor Supervisory Circuit Total Volume Evaluation Transportation Volume Modelling Methodology
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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