Direct-water-cooled next High Power Density Dual (nHPD2) considering inverter layout

Conference: PCIM Europe 2016 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/10/2016 - 05/12/2016 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2016

Pages: 8Language: englishTyp: PDF

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Authors:
Horiuchi, Keisuke; Konishi, Yuichiro; Mori, Mutsuhiro (Hitachi, Ltd. Research & Development Group, Japan)
Kawase, Daisuke (Hitachi Power Semiconductor Device, Ltd., Japan)
Saito, Katsuaki (Hitachi Europe Ltd. Power Device Division, UK)

Abstract:
Three types of cooling methods were compared for Hitachi’s latest low inductive housing 2in1 module called “next High Power Density Dual (nHPD2)” considering inverter layout. The first is an air-cooled type, the second is a conventional water-cooled type (called ‘indirect-watercooled’ type), and the third is a water-cooled type without using thermal grease (called ‘direct- water-cooled’ type). The trade-off curve between thermal resistance and pressure drop was smallest when the direct-water-cooled nHPD2 was used. The thermal resistance of direct- water-cooled type was half which resulted in electric current output doubling comparing to indirect-water-cooled type.