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:
Sep. 09, 2025
Filed:
Apr. 14, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Hiroya Natsuhara, Tokyo, JP;
Isao Kezobo, Tokyo, JP;
Tatsuya Mori, Tokyo, JP;
Chiaki Fujimoto, Tokyo, JP;
Atsushi Ito, Kobe, JP;
Yusuke Takarada, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A power converter includes: a multiphase inverter circuit including multiple switching elements; multiple current sensors each of which detects a current of a respective phase of the inverter circuit; a terminal voltage detector that detects a voltage of each terminal of a load connected to the inverter circuit; a switching element drive circuit that controls the switching elements according to a switching pattern given; a fault detector that detects a fault in the inverter circuit or the current sensors; and a fault identifier that, after the fault detector detects the fault, switches the switching pattern to be given to the switching element drive circuit according to types of faults detectable by the fault detector, and identifies a type and a location of the fault based on the value of the current detected or the value of the voltage detected during the control according to the switching pattern.