ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,237,785, issued on Feb. 25, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Electrical power conversion apparatus" was invented by Ryo Shinohara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical power conversion apparatus is provided in which a heat generation abnormality-state such as an abnormal state of a cooling device is determined earlier in its determination, so that it becomes possible to securely perform a protective operation even in the heat generation abnormality-state. A control device estimates a change rate of a temperature detection value on the basis of a switching-element loss calculation value of a semiconductor ...