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:
May. 05, 2020
Filed:
Sep. 28, 2018
Applicant:
Jtekt Corporation, Osaka-shi, Osaka, JP;
Inventor:
Hiroshi Sumasu, Kashihara, JP;
Assignee:
JTEKT CORPORATION, Osaka-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/00 (2006.01); H02P 27/08 (2006.01); H02M 7/5387 (2007.01); H02P 21/22 (2016.01); H02M 1/44 (2007.01); B62D 5/04 (2006.01); H02P 21/00 (2016.01);
U.S. Cl.
CPC ...
H02P 27/08 (2013.01); B62D 5/04 (2013.01); H02M 1/44 (2013.01); H02M 7/53871 (2013.01); H02P 21/00 (2013.01); H02P 21/22 (2016.02); B62D 5/0409 (2013.01); B62D 5/0463 (2013.01); H02P 21/0003 (2013.01);
Abstract
An electric motor that is controlled by a motor control device has two-system multi-phase motor coils. The motor control device includes a common mode noise reduction unit that changes a PWM count in a PWM cycle for at least one phase in one of two systems such that a current that flows through a stray capacitance because of an output voltage for one phase in the other system is canceled out with a current that flows through the stray capacitance because of an output voltage for the at least one phase in the one system in at least one PWM cycle in a current control cycle.