Reduction of the thermal cycling stress of power semiconductors by non-linear phase change cooling

• Applicant: Dr.-Ing. Michael Gleißner
• Subject Area: Electrical Energy Systems, Power Management, Power Electronics, Electrical Machines and Drives
• Term: since 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 549893532

This proposal aims to investigate an unconventional type of cooling that works on top of a power semiconductor chip by a non-linear thermal capacitance. This is intended to reduce the thermal impedance in specific time ranges specifically. This cooling method is to be implemented through the phase change of a material, preferably liquid-gaseous, with the medium only being in indirect contact with the chip to prevent chemical reactions and ensure electrical insulation. The second aspect of the investigation concerns a method investigation or development; here, the modeling of such a non-linear cooling is to be researched to predict the power chip's temperatures based on load profiles.

• DFG Programme: Research Grants
• Co-Investigator: Professor Dr.-Ing. Mark-Matthias Bakran