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:
Jul. 29, 2025
Filed:
Jul. 07, 2021
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Ryota Asakura, Tokyo, JP;
Yusuke Shirouchi, Tokyo, JP;
Kenji Fujiwara, Tokyo, JP;
Tetsuya Kojima, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B64D 1/00 (2006.01); B64D 41/00 (2006.01); H02M 1/08 (2006.01); H02M 1/32 (2007.01); H02M 7/537 (2006.01);
U.S. Cl.
CPC ...
H02M 7/537 (2013.01); B64D 41/00 (2013.01); H02M 1/08 (2013.01); H02M 1/32 (2013.01);
Abstract
A gradationally controlled voltage inverter, which is a power conversion device, controls a gate impedance of a main inverter before a capacitor voltage VDCS of a sub-inverter is controlled at a predetermined voltage so as to be larger than a gate impedance of the main inverter after the capacitor voltage VDCS of the sub-inverter is controlled at the predetermined voltage. This reduces the noise caused by the main inverter when the capacitor voltage VDCS of the sub-inverter is not controlled at the predetermined voltage.