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:
Sep. 05, 2017
Filed:
May. 27, 2015
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Yoshihiro Miyama, Chiyoda-ku, JP;
Moriyuki Hazeyama, Chiyoda-ku, JP;
Akihiro Daikoku, Chiyoda-ku, JP;
MITSUBISHI ELECTRIC CORPORATION, Chiyoda-ku, JP;
Abstract
A multigroup, multiphase driving system includes a power converter that converts direct current power into alternating current power and vice versa, a direct current power supply connected to a direct current side of the power converter to be charged with and discharge direct current power, and a rotary electric machine connected to an alternating current side of the power converter and including a plurality of groups of multiphase armature windings, and further including a determination unit that determines the number of groups to be used to drive the rotary electric machine on the basis of a rotation speed of the rotary electric machine, a current flowing through the rotary electric machine, a direct current power supply voltage of the direct current power supply, and a carrier frequency of the power converter, the multigroup, multiphase driving system overall loss in the system can be reduced.