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:
Nov. 14, 2023
Filed:
Jul. 26, 2019
Applicant:
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Inventor:
Kyota Aikawa, Tokyo, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/54 (2020.01); G01R 19/165 (2006.01); G01R 23/06 (2006.01);
U.S. Cl.
CPC ...
G01R 31/54 (2020.01); G01R 19/165 (2013.01); G01R 23/06 (2013.01);
Abstract
A power conversion device of an embodiment includes a rectifier that full-wave rectifies alternating current of a plurality of phases supplied from a power supply side, a capacitor that smoothes an output voltage of the rectifier, a voltage detection unit that detects the smoothed voltage, and an open phase detection unit that detects that an open phase has occurred in the alternating current of the plurality of phases based on a component having a frequency that is twice as high as a fundamental frequency of the alternating current of the plurality of phases included in frequency components of the smoothed voltage.