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:
Dec. 03, 2019
Filed:
Jan. 15, 2016
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Toshisada Mitsui, Hitachinaka, JP;
Hideki Miyazaki, Hitachinaka, JP;
Seigo Yukutake, Hitachinaka, JP;
Katsuhiro Hoshino, Hitachinaka, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-shi, JP;
Abstract
Provided is a motor drive device capable of adjusting a 0-axis current to a desired value. A motor drive device (inverter device) for an open winding type motorin which a stator winding wire includes three-phase independent winding wires, andincludes a plurality of single-phase inverters, andprovided for each of the winding wirestoto individually apply a voltage to a corresponding winding wire, and a controllerthat controls each of the single-phase invertersto. The controlleradjusts a 0-axis current to a predetermined value by alternately and repeatedly generating a first period in which a sum of voltages applied to the respective independent winding wirestois set to a value other than zero to offset the 0-axis current and a second period in which the sum of the voltages applied to the respective winding wirestois set to zero.