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:
Feb. 21, 2017
Filed:
May. 07, 2012
Isao Kezobo, Chiyoda-ku, JP;
Masahiro Iezawa, Chiyoda-ku, JP;
Susumu Zeniya, Chiyoda-ku, JP;
Eiji Iwami, Chiyoda-ku, JP;
Yusuke Fujiki, Chiyoda-ku, JP;
Hiroyuki Kishioka, Chiyoda-ku, JP;
Sadaaki Kamei, Chiyoda-ku, JP;
Yoshihiko Kimpara, Chiyoda-ku, JP;
Jiro Okada, Chiyoda-ku, JP;
Isao Kezobo, Chiyoda-ku, JP;
Masahiro Iezawa, Chiyoda-ku, JP;
Susumu Zeniya, Chiyoda-ku, JP;
Eiji Iwami, Chiyoda-ku, JP;
Yusuke Fujiki, Chiyoda-ku, JP;
Hiroyuki Kishioka, Chiyoda-ku, JP;
Sadaaki Kamei, Chiyoda-ku, JP;
Yoshihiko Kimpara, Chiyoda-ku, JP;
Jiro Okada, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
Provided are a motor control device () for controlling a motor () having a plurality of phases, for quickly and accurately detecting a phase in which an open-state fault has occurred when the open-state fault occurs in a target phase. When a power-supply voltage (Vb) is equal to or higher than a predetermined voltage (Vthr), a motor rotation speed (ω) is equal to or lower than a predetermined speed (ωthr), a target x-phase voltage command (Vx*) is not in the vicinity of zero, a current (Ix) of the target x-phase is equal to or lower than a predetermined current (Iu_thr), and a state in which a control error is equal to or larger than a predetermined error is detected over a predetermined time period or longer, occurrence of an open-state fault in the target phase is determined.