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:
Apr. 10, 2012
Filed:
Dec. 17, 2008
Takahiro Yamada, Nagoya, JP;
Takahiro Yamada, Nagoya, JP;
Denso Corporation, Kariya, JP;
Abstract
In a control system designed to use a plurality of voltage vectors expressing a switching mode for a switching circuit to thereby control a difference between a current actually flowing through a multiphase rotary machine and a command current value therefore within an allowable range, a calculating unit calculates a direction of change in the difference during the switching mode for the switching circuit being set to a zero vector. A zero-vector setting unit sets the switching mode for the switching circuit to the zero vector when a preset positional condition between the difference and the direction of change in the difference is met in a space.