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:
Oct. 25, 2016
Filed:
Jul. 11, 2013
Applicant:
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Inventors:
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka-Shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 21/00 (2016.01); H02P 21/12 (2016.01); H02P 21/14 (2016.01);
U.S. Cl.
CPC ...
H02P 21/12 (2013.01); H02P 21/0003 (2013.01); H02P 21/141 (2013.01);
Abstract
An electric motor controller includes a first coordinate conversion unit that converts a three-phase current into a current in a δc-γc rotating coordinate system, a first calculation unit that obtains a first term, a second calculation unit that obtains a voltage command value in the δc-γc rotating coordinate system as a sum of the first term and a second term, a second coordinate conversion unit that coordinate-converts the voltage command value into a voltage command value of a voltage to be applied to a rotary electric motor in another coordinate system.