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.

Date of Patent:
Oct. 31, 2017

Filed:

Aug. 12, 2016
Applicant:

Denso Corporation, Kariya, Aichi-pref., JP;

Inventors:

Xuezhi He, Kariya, JP;

Masaki Nishiyama, Kariya, JP;

Hirofumi Yamashita, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/04 (2006.01); H02P 3/00 (2006.01); H02P 7/00 (2016.01); H02P 29/68 (2016.01); H02P 25/03 (2016.01); H02P 27/06 (2006.01);
U.S. Cl.
CPC ...
H02P 29/68 (2016.02); H02P 25/03 (2016.02); H02P 27/06 (2013.01);
Abstract

A motor-generator control part controls driving of a motor-generator, which is a drive power source of a vehicle. A torque limitation part of the MG control part limits a torque of the motor-generator when an element temperature indicating a system temperature increases to be higher than a limitation starting temperature. The torque limitation part continues the torque limitation, which was performed when the element temperature was at a peak temperature, until a limitation continuation period elapses, when the element temperature changes from increasing to decreasing as a result of limiting the torque of the motor-generator. Thus torque variation is suppressed while also suppressing overheating of a motor-generator driving system.


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