Full SiC DCDC-Converter with a Power Density of more than 100kW/dm super(3)

This Paper describes a non-isolated bidirectional full SiC 800V 200kW DCDC-converter power stage for electric and hybrid vehicles that reaches a power density of more than 100 kW/dm3 at a switching frequency of 200 kHz. The high power density is achieved by the use of SiC-MOSFETs sintered on custom...

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Bibliographic Details
Published inMaterials science forum Vol. 821-823; pp. 884 - 888
Main Authors Kreutzer, Otto, Marz, Martin, Nakata, Hideki
Format Journal Article
LanguageEnglish
Published 01.06.2015
Subjects
Boards
Capacitors
Density
Electric power generation
Passive components
Phases
Ripples
Silicon carbide
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Summary:This Paper describes a non-isolated bidirectional full SiC 800V 200kW DCDC-converter power stage for electric and hybrid vehicles that reaches a power density of more than 100 kW/dm3 at a switching frequency of 200 kHz. The high power density is achieved by the use of SiC-MOSFETs sintered on custom made Si sub(3)N sub(4) DCB-substrates controlled by custom made extremely flat drivers and a resulting very low inductive DC-link connection. All passive components like inductors and capacitor boards are custom made in order to keep all parasitic effects as low as possible. The power is subdivided on six interleaved phases to reduce the required capacitor ripple current capability.
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ISSN:0255-5476
1662-9752
DOI:10.4028/www.scientific.net/MSF.821-823.884