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:
May. 10, 2016
Filed:
Dec. 06, 2010
Applicants:
Shoji Adachi, Chiyoda-ku, JP;
Yoshihiko Kinpara, Chiyoda-ku, JP;
Inventors:
Shoji Adachi, Chiyoda-ku, JP;
Yoshihiko Kinpara, Chiyoda-ku, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/28 (2006.01); G01R 27/26 (2006.01); H02P 21/14 (2016.01);
U.S. Cl.
CPC ...
G01R 27/2611 (2013.01); H02P 21/145 (2013.01);
Abstract
[Problem] For measuring the inductance of a synchronous motor, a high-speed and convenient inductance measuring device for a synchronous motor is provided. [Solution] A three-phase high-frequency rotation voltage is applied to a synchronous motor, thereby calculating the inductance from the same frequency component as that of the high-frequency voltage included in a motor current.