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:
Mar. 06, 2018
Filed:
Apr. 29, 2014
Mitsubishi Electric Corporation, Tokyo, JP;
Shunsuke Nakajima, Tokyo, JP;
Yuya Tsuchimoto, Tokyo, JP;
Isao Kezobo, Tokyo, JP;
Yoshihiko Kimpara, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
This AC rotating machine control device includes: power limiting meansfor limiting drive power supplied for driving the AC rotating machine; and power feed meansfor, when sensor abnormality determination meansdetermines that the rotational position sensor is abnormal, on the basis of the estimated rotational position, supplying the AC rotating machine with power obtained by adding rotational position estimation power supplied for the rotational position estimation meansto estimate the rotational position, to the drive power limited by the power limiting means, wherein the power limiting meanslimits drive current at least during a predetermined period since the sensor abnormality determination meansdetermines that the abnormality occurs until estimated error of the estimated rotational position falls within a predetermined range.