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. 08, 2008
Filed:
Sep. 19, 2006
Takayuki Kifuku, Tokyo, JP;
Masaki Matsushita, Tokyo, JP;
Hiroyuki Kozuki, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A motor control apparatus can protect circuit elements in an appropriate manner while preventing an incorrect abnormality determination when a motor is in regeneration operation, etc. The apparatus includes a target current calculation section (), a drive control section () that generates a drive signal based on a current deviation ΔI between a target current (IMT) and a detected current (IMS), an abnormality determination section () that generates an abnormality determination signal based on the target current (IMT) and the detected current (IMS), and a regeneration operation determination section () that determines whether the motor () is in a regeneration operation state. When it is determined that the motor () is in a regeneration operation, a determination threshold of the abnormality determination section () is set to a value larger than a determination threshold during power running operation.