Microchannel Thermal Management System With Two-Phase Flow for Power Electronics Over 500 W/cm2 Heat Dissipation

Fengze Hou, Hengyun Zhang, Dezhu Huang, Jiajie Fan, Fengman Liu, Tingyu Lin, Liqiang Cao, Xuejun Fan, Braham Ferreira, Guoqi Zhang

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

In this article, a microchannel thermal management system (MTMS) with the two-phase flow using the refrigerant R1234yf with low global warming potential is presented. The thermal test vehicles (TTVs) were made of either single or multiple thermal test chips embedded in the substrates, which were then attached to the MTMS. The system included two identical aluminum microchannel heat sinks (MHSs) connected in series in the cooling loop, which also consisted of a gas flowmeter, a miniature compressor, a condenser, a throttling device, and accessory measurement components. The experimental results showed that the thermal management system could dissipate a heat flux of 526 W/cm 2 while maintaining the junction temperature below 120 °C. For SiC mosfet with a higher junction temperature, e.g., 175 °C, the current system is expected to dissipate a heat flux as high as about 750 W/cm 2 . The effects of the rotational speed of the compressor, the opening of the throttling device, TTV layout on MHS, and a downstream heater on the cooling performance of the system were analyzed in detail. The study shows that the present thermal management with a two-phase flow system is a promising cooling technology for the high heat flux SiC devices.
Original languageEnglish
Article number19784255
Pages (from-to)10592-10600
Number of pages9
JournalIEEE transactions on power electronics
Volume35
Issue number10
DOIs
Publication statusPublished - 6 Apr 2020

Keywords

  • Microchannel terminal management system
  • Two-phase flow
  • Power electronics

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