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:
Mar. 19, 2019
Filed:
Feb. 10, 2017
Applicant:
Kabushiki Kaisha Yaskawa Denki, Kitakyushu-shi, JP;
Inventor:
Takahiro Saeki, Kitakyushu, JP;
Assignee:
KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/34 (2016.01); H02P 6/14 (2016.01); H02P 27/08 (2006.01); H02P 27/04 (2016.01); H02P 21/24 (2016.01); H02P 21/18 (2016.01);
U.S. Cl.
CPC ...
H02P 21/34 (2016.02); H02P 6/14 (2013.01); H02P 21/18 (2016.02); H02P 21/24 (2016.02); H02P 27/047 (2013.01); H02P 27/08 (2013.01);
Abstract
A motor controller includes an inverter including circuitry which supplies power to a motor, and a controller including circuitry which controls the inverter such that the circuitry of the inverter supplies an AC current to a first axis of a stationary orthogonal coordinate system in the motor while changing a frequency of the AC current. The first axis has a predetermined phase relationship with a phase voltage of the motor.