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:
Jun. 24, 2014
Filed:
Dec. 12, 2011
Yoshitaka Iwaji, Hitachinaka, JP;
Daigo Kaneko, Hitachi, JP;
Kento Mochizuki, Hitachinaka, JP;
Takeshi Shinomiya, Hitachinaka, JP;
Daisuke Kori, Hitachinaka, JP;
Seikichi Masuda, Hitachi, JP;
Yoshitaka Iwaji, Hitachinaka, JP;
Daigo Kaneko, Hitachi, JP;
Kento Mochizuki, Hitachinaka, JP;
Takeshi Shinomiya, Hitachinaka, JP;
Daisuke Kori, Hitachinaka, JP;
Seikichi Masuda, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
To prevent demagnetization of a permanent magnet synchronous rotating machine, a rotating machine control device according to the present invention is a rotating machine control device comprising: a power converter having a switch part on each of a positive side and a negative side for each phase; and short circuit detection unit for detecting a short circuit of the switch part, wherein a command to turn on positive-side switches and negative-side switches of a plurality of phases of the switch part is issued in the case where the short circuit detection unit detects the short circuit.