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:
Aug. 06, 2019
Filed:
May. 11, 2015
Applicant:
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Inventors:
Nobuyasu Kanekawa, Tokyo, JP;
Ryoichi Kobayashi, Hitachinaka, JP;
Tomonobu Koseki, Hitachinaka, JP;
Takuro Kanazawa, Tokyo, JP;
Assignee:
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 27/08 (2006.01); H02P 6/10 (2006.01); H02P 21/00 (2016.01); H02P 29/60 (2016.01); B62D 5/04 (2006.01); H02P 25/22 (2006.01); H02P 21/22 (2016.01);
U.S. Cl.
CPC ...
H02P 6/10 (2013.01); B62D 5/046 (2013.01); H02P 21/22 (2016.02); H02P 21/50 (2016.02); H02P 25/22 (2013.01); H02P 27/08 (2013.01); H02P 27/085 (2013.01); H02P 29/60 (2016.02); B62D 5/04 (2013.01);
Abstract
The purpose of the present invention is not only to reduce ripple current but also to improve operation efficiency by reducing heat generation. When n is defined as an integer of 2 or more, a motor control device of the present invention drives n sets of windings by n sets of inverters. The motor control device is characterized in that when said n sets of inverters output high power, at least one or more of said n sets of inverters are set to have an output duty cycle of 100%.