Preliminary Investigation into Liquid-Cooled PEBBs

This paper describes the design and analysis of a system for removing up to 10 kW of heat from each Power Electronics Building Block (PEBB) in a stack of four PEBB units, using liquid cooling via a dry interface. This is achieved by hard-mounting cold plates in the electronics cabinet, placing the heat-transfer surface of each PEBB adjacent to a cold plate, and improving heat transfer across the interface through the use of a thermal pad. The paper presents initial thermal analysis using analytical models. These analyses indicate that this is a viable solution to the PEBB cooling problem.