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. 27, 2026
Filed:
Mar. 29, 2023
Nidec Corporation, Kyoto, JP;
Kotaro Kataoka, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A power conversion device includes a first three-phase full-bridge circuit connected to one end of a three-phase coil of an open-winding three-phase motor, a second three-phase full-bridge circuit connected to another end of the three-phase coil, and a control unit that individually controls voltage application time of the three-phase coil. The control unit minimizes a width of a first time region in which voltage application time of an X-phase coil and voltage application time of a Y-phase coil overlap within one control period of the pulse width modulation, and changes a position of a second time region occupied by voltage application time of the Z-phase coil within the one control period, based on target voltage application time length of each of the X-phase coil, the Y-phase coil, and the Z-phase coil with a smallest current value among the three-phase coils and a current direction of the Z-phase coil.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile