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:
Jul. 12, 2022
Filed:
Apr. 26, 2019
Denso Corporation, Kariya, JP;
Koichi Nishibata, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A control circuit for an electric power converter includes an abnormality determiner, a voltage determiner and an abnormality-handling controller. The abnormality determiner determines whether an abnormality has occurred in at least one of the electric power converter and a multi-phase rotating electric machine. The voltage determiner determines whether a line-to-line voltage between phase windings of the rotating electric machine is higher than a voltage of a DC power source. The abnormality-handling controller performs, when it is determined by the abnormality determiner that an abnormality has occurred and it is determined by the voltage determiner that the line-to-line voltage is higher than the voltage of the DC power source, an all-phase short circuit control of turning on all of switches of one of an upper-arm switch group and a lower-arm switch group and turning off all of switches of the other of the upper-arm switch group and the lower-arm switch group.