Designing Thermally Uniform Heatsink with Rectangular Pins for High-Power Automotive SiC Inverters
Paper i proceeding, 2020

This paper presents the design of a high-performance liquid-cooled heatsink for three-phase automotive inverters that attains uniform thermal distribution at the surface of the three power modules. Power modules with SiC-MOSFETs are used in this study and a uniform thermal distribution on the heatsink guarantees equal thermal loading of the semiconductor devices. A comparative study of various cooling plate geometries is made and their effectiveness in meeting the design objectives of low sink-temperature and coolant pressure drop and the highest possible temperature uniformity along the surface of the plate is presented. Plates with straight and wavy fins are compared with designs accommodating rectangular pins and the advantages of each case is shown with the corresponding simulation results. Key design parameters of the cooling plate geometries are optimized with an iterative process, which is presented with selective simulation results of 3D Conjugate Heat Transfer computations for coolant flow rates up to 10~l/min. The final heatsink design accommodates multiple rectangular pins and attains temperature difference of less than 2oC among the three SiC power modules.

SiC MOSFET

Liquid cooling

Conjugate heat transfer

Electric drive

Three-phase inverter

Temperature uniformity

Författare

Georgios Mademlis

Chalmers, Elektroteknik, Elkraftteknik, Elmaskiner och kraftelektronik

Raik Orbay

Chalmers, Elektroteknik, Elkraftteknik, Elmaskiner och kraftelektronik

Yujing Liu

Chalmers, Elektroteknik, Elkraftteknik, Elmaskiner och kraftelektronik

Nimananda Sharma

Chalmers, Elektroteknik, Elkraftteknik, Elmaskiner och kraftelektronik

IECON Proceedings (Industrial Electronics Conference)

IECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society
Singapore, Singapore,

iTEM - Integrerad Transmission och Elektrisk motor

Energimyndigheten, 2018-02-09 -- 2020-09-30.

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Ämneskategorier

Farkostteknik

Annan elektroteknik och elektronik

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Skapat

2020-09-05