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. 22, 2020
Filed:
Mar. 28, 2018
Applicant:
Daikin Industries, Ltd., Osaka, JP;
Inventors:
Minoru Kitou, Osaka, JP;
Naoto Kobayashi, Osaka, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/527 (2006.01); H02M 7/539 (2006.01); H02P 27/08 (2006.01); H02P 21/22 (2016.01); H02M 1/36 (2007.01);
U.S. Cl.
CPC ...
H02M 7/527 (2013.01); H02M 7/539 (2013.01); H02P 21/22 (2016.02); H02P 27/08 (2013.01); H02M 1/36 (2013.01);
Abstract
A locus of integrals, in terms of time, of unit voltage vectors forms a loop within a period shorter than a reciprocal of a maximum value of an operating frequency, in terms of electrical angle, of a compressor motor, the unit voltage vectors being voltage vectors that are units composing an instantaneous space vector indicating voltage which an inverter for driving the compressor motor outputs except in a dead time period.