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:
Dec. 02, 2008
Filed:
Mar. 16, 2005
Isao Kezobo, Tokyo, JP;
Masahiro Kimata, Tokyo, JP;
Kazumichi Tsutsumi, Tokyo, JP;
Chiaki Fujimoto, Tokyo, JP;
Kouji Fukusumi, Tokyo, JP;
Noriyuki Inoue, Tokyo, JP;
Isao Kezobo, Tokyo, JP;
Masahiro Kimata, Tokyo, JP;
Kazumichi Tsutsumi, Tokyo, JP;
Chiaki Fujimoto, Tokyo, JP;
Kouji Fukusumi, Tokyo, JP;
Noriyuki Inoue, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A control apparatus for an electric motor, in which a current controller giving multiphase voltage commands to a drive circuit for an inverter includes a normal-mode current controller for use in a normal mode, an abnormal-mode current controller for use in an abnormal mode, and an abnormality decision device. In a case of an abnormality occurring to one phase of an electric motor or the inverter, the controller is altered, and the abnormal-mode multiphase voltage commands which are generated by the abnormal-mode current controller are set as the multiphase voltage commands for the inverter drive circuit.