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:
May. 06, 2025
Filed:
Aug. 24, 2021
Sanden Corporation, Isesaki, JP;
Atsushi Saito, Isesaki, JP;
SANDEN CORPORATION, Isesaki, JP;
Abstract
It is an object to provide an inverter device capable of appropriately protecting power semiconductor elements and further realizing an optimal operation considering a withstand voltage. The inverter device includes a junction temperature estimate calculating unit which adds a temperature rise value ΔT obtained from a loss P of power semiconductor elements to a temperature Tth detected by a temperature sensor to estimate a junction temperature Tj. When the junction temperature Tj is estimated, the junction temperature estimate calculating unit performs a correction in the direction of excluding an influence of heat generation of other electronic components other than the power semiconductor elements, and a wiring pattern of a control board on a temperature sensor.