Temperature detection device, temperature detection method,...

Details Temperature detection device, temperature detection method,... Temperature detection device, temperature detection method,...

2005-03-10

2009-10-27

Verbitsky, Gail (Department: 2855)

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

C374S178000, C374S005000, C361S093800

Reexamination Certificate

active

07607827

ABSTRACT:
Heating value P[W] generated at an IGBT is calculated, and a temperature difference ΔT′j[° C.] between a temperature Tw[° C.] of cooling water circulating in a cooling system and a temperature Tj[° C.] of an IGBT is calculated based on thermal resistance R [° C./W] of the cooling system. A temperature rise ΔTj[° C.] with transient influences eliminated is then calculated based on the calculated temperature difference ΔT′j[° C.], and the temperature Tj[° C.] (=Tw[° C.]+ΔTj[° C.]) of the IGBT is calculated.

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