Learning Forum

[Sriganeshkumar Ravikumar]

Hello,

I was simulating a steady state simulation and exporting thermal matrices at two different break points one at 20 Nm @ 1000 rpm and another at 100 Nm @5000 rpm.

To my surprise I have got same values of thermal capacitance but the thermal resistances are varies.

what would be the reason for these variation?

[HDLI]

Hello Sriganeshkumar,

       I think thermal resistance would change by the heat transfer. When having same heat transfer coefficient, high power may have a high thermal resistance between ambient and housing due to convection. The thermal capacitance would be determined by the size and materail properties.

HDLI