Abstract

In this paper, a prestressed method is proposed to improve the pressure distribution uniformity within press pack IGBTs (PP IGBTs). The proposed method strengthens the compliance mechanism of plastic strain through a prestress clamping force and therefore obtain a more uniform pressure distribution under rating clamping force. The requirement of machining tolerances could be relaxed through the proposed method, which is generally hard to control in the manufacturing process of PP IGBTs. A simple formula is proposed to fast determine the prestress clamping force under different tolerance cases. The improvement effect of the proposed method is verified by FEM simulation results and experimental results.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.