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:
Nov. 10, 2026
Filed:
Jul. 01, 2022
Mitsubishi Electric Corporation, Tokyo, JP;
Kohei Onda, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A power conversion device includes an arm pair including a first semiconductor switching element and a second semiconductor switching element connected in series between plus and minus terminals for DC. In the power conversion device, there are: a third resistor group connected in parallel to the first semiconductor switching element; a second resistor group connected in parallel to the second semiconductor switching element; a reference voltage generation circuit which generates first and second reference voltages obtained by dividing a voltage between the plus and minus terminals; and an abnormality determination circuitry which, after operations of both semiconductor switching elements are stopped, compares a detection voltage obtained through voltage division by the second resistor group and each of the first and second reference voltages, and determines whether or not either of the semiconductor switching elements has sustained main-withstand-voltage deterioration.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile