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:
Mar. 11, 2025
Filed:
Feb. 02, 2022
Aisin Corporation, Aichi, JP;
Subrata Saha, Kariya, JP;
AISIN CORPORATION, Kariya, JP;
Abstract
A control part determines that a contactor is in an open state, based on a voltage at both ends of a smoothing capacitor and a current flowing through a direct-current power supply. In a state in which rotational speed is greater than or equal to a speed threshold value, the control part controls both inverters by shutdown control and brings both contactors into an open state. After the rotational speed reaches less than the speed threshold value, the control part controls a failure-side inverter by active short-circuit control, and drives a normal-side inverter using discharge torque of a smoothing capacitor. After eliminating an abnormal voltage state, the control part controls a normal contactor to a closed state and drives a rotating electrical machine by one of the inverters.