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:
Mar. 22, 2022
Filed:
Sep. 21, 2020
Applicant:
Ls Electric Co., Ltd., Anyang-si, KR;
Inventors:
Chun-Suk Yang, Anyang-si, KR;
Hong-Seok Kim, Anyang-si, KR;
Assignee:
LS ELECTRIC CO., LTD., Anyang-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/327 (2006.01); H02P 27/08 (2006.01); H02M 1/08 (2006.01); H02M 7/5387 (2007.01); H02M 1/32 (2007.01); G01R 31/42 (2006.01); H02M 7/797 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3278 (2013.01); G01R 31/42 (2013.01); H02M 1/08 (2013.01); H02M 1/32 (2013.01); H02M 7/53871 (2013.01); H02P 27/08 (2013.01); H02M 1/0009 (2021.05); H02M 7/5387 (2013.01); H02M 7/797 (2013.01);
Abstract
A diagnosing device of a three phase inverter is provided, which includes a relay connected in series with a capacitor disposed on a DC link, an initial charging resistor connected in parallel to the relay, an inverter comprising a switching device for controlling a power supply to three phase output lines, a current sensor disposed on a connection line connecting between the DC link and the inverter to sense a current, and a control unit for driving the switching device and diagnosing at least one of opening and shorting of the switching device according to whether the current is sensed or not.