The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2015
Filed:
Jun. 09, 2014
Fanuc Corporation, Yamanashi, JP;
Ryouta Yamaguchi, Yamanashi, JP;
FANUC CORPORATION, Yamanashi, JP;
Abstract
A temperature calculation unit calculates a temperature Tof one power semiconductor chip as a temperature estimating target, from a reference temperature, a temperature difference ΔT, and a temperature difference ΔT. The temperature difference ΔTis calculated based on an electric power loss Qgenerated in all power semiconductor chips of a power semiconductor module containing one power semiconductor chip as the temperature estimating target. The temperature difference ΔTis calculated based on the electric power loss Qand an electric power loss Qgenerated in all power semiconductor chips of a power semiconductor module other than the power semiconductor module containing one power semiconductor chip as the temperature estimating target.