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. 28, 2021
Filed:
May. 17, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Takahiro Masuda, Osaka, JP;
Taro Kishibe, Hyogo, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/04 (2006.01); H02P 27/08 (2006.01); H02P 6/28 (2016.01); G01R 19/165 (2006.01); H02P 23/00 (2016.01); H02P 23/14 (2006.01);
U.S. Cl.
CPC ...
H02P 27/08 (2013.01); G01R 19/16547 (2013.01); H02P 6/28 (2016.02); H02P 23/0004 (2013.01); H02P 23/14 (2013.01);
Abstract
A motor control device that detects a motor current through ΔΣ AD conversion includes a stop signal generator and a stop signal controller. When a difference between a maximum value and a minimum value of three phase voltage command values to be applied to a motor is smaller than or equal to a predetermined threshold, a stop signal that causes the ΔΣ AD conversion to stop is output with a delay by the time corresponding to a delay in current detection while a leakage current caused by on and off of a power conversion element is occurring.