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. 08, 2020
Filed:
Apr. 26, 2016
Applicant:
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Inventors:
Kenji Takahashi, Chiyoda-ku, JP;
Satoshi Kawamura, Chiyoda-ku, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/539 (2006.01); H02M 7/5395 (2006.01); H02M 7/48 (2007.01); G01R 19/00 (2006.01); G01R 23/20 (2006.01); H02M 1/12 (2006.01); H03K 7/08 (2006.01);
U.S. Cl.
CPC ...
H02M 7/5395 (2013.01); G01R 19/003 (2013.01); G01R 23/20 (2013.01); H02M 1/12 (2013.01); H02M 7/48 (2013.01); H03K 7/08 (2013.01);
Abstract
Harmonics are generated when pulse width modulation is carried out with an asymmetrical triangular wave as a carrier signal in a power conversion device. In order to restrict these harmonics, a command value is corrected in advance so as to be distorted, a gate signal of a switching operation is determined lasing a post-correction command value and an asymmetrical carrier signal, and pulse width modulation is carried out, whereby an output voltage or output current with no distortion is obtained.