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:
Jun. 18, 2019
Filed:
Mar. 26, 2018
Applicant:
Aisin Seiki Kabushiki Kaisha, Kariya-shi, JP;
Inventors:
Assignee:
AISIN SEIKI KABUSHIKI KAISHA, Kariya-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/155 (2006.01); H02P 29/024 (2016.01); H02P 3/18 (2006.01); H02P 29/032 (2016.01); H02H 3/093 (2006.01); H02H 7/085 (2006.01); H02P 6/00 (2016.01);
U.S. Cl.
CPC ...
H02P 29/027 (2013.01); H02H 3/093 (2013.01); H02H 7/085 (2013.01); H02P 3/18 (2013.01); H02P 29/032 (2016.02);
Abstract
An overcurrent protection device has a threshold value for determination of a magnitude of motor current and performs: a first detection of detecting a period, during which the motor current takes a value larger than the threshold value, as a first value; a second detection of detecting a maximum value of the motor current as a second value by frequently detecting the motor current; and a signal formation of forming a motor stop signal based on determination using the first value and the second value.