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. 19, 2017
Filed:
Oct. 21, 2015
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventors:
Kiyoshi Fujii, Kariya, JP;
Hideaki Nakayama, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/00 (2016.01); H02P 21/22 (2016.01); B60L 15/02 (2006.01); B60L 15/20 (2006.01); H02P 25/22 (2006.01); H02P 27/06 (2006.01); H02P 21/20 (2016.01);
U.S. Cl.
CPC ...
H02P 21/22 (2016.02); B60L 15/025 (2013.01); B60L 15/2045 (2013.01); H02P 21/0003 (2013.01); H02P 21/20 (2016.02); H02P 25/22 (2013.01); H02P 27/06 (2013.01);
Abstract
A control unit applied to a motor that includes a rotor having a field winding and a rotor having armature winding groups to control a field current passed through the field winding. Each of the armature winding groups is applied with a prescribed voltage. The field current is controlled so as to be a minimum field current value If_min with which a deviation between an amplitude of an induced voltage generated in the armature winding groups by rotation of the rotor, and an amplitude of the voltage applied to the armature winding groups becomes equal to or smaller than a prescribed value.