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:
Oct. 06, 2026
Filed:
Mar. 01, 2023
Hitachi Astemo, Ltd., Hitachinaka, JP;
Shun Taniguchi, Tokyo, JP;
Kentaro Matsuo, Hitachinaka, JP;
Toshiyuki Ajima, Tokyo, JP;
Kazuaki Tobari, Tokyo, JP;
Hitachi Astemo, Ltd., Hitachinaka, JP;
Abstract
Disclosed are a motor control device capable of stably driving an AC motor even under influence of dead time, and an electric vehicle mounted with an AC motor controlled by the motor control device. The motor control device controls a power converter () to which an AC motor () is connected. The motor control device includes: a voltage vector calculation unit () that generates a voltage command of the power converter such that an AC amount of the AC motor matches a command value; and a damping ratio control unit () that calculates, on the basis of a vibration component of a dq-axis component of the AC amount, the vibration component of a d-axis component or the vibration component of a q-axis component at a time point when a phase of the AC amount advances, and generates a correction amount for correcting the voltage command on the basis of the calculated vibration component of the d-axis component or the calculated vibration component of the q-axis component.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile