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:
Jan. 31, 2017
Filed:
Jul. 08, 2013
Applicant:
Lsis Co., Ltd., Anyang-si, Gyeonggi-do, KR;
Inventor:
Anno Yoo, Seoul, KR;
Assignee:
LSIS CO., LTD., Anyang-Si, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); H02M 7/49 (2007.01); H02M 1/00 (2006.01); G01R 31/42 (2006.01);
U.S. Cl.
CPC ...
G01R 27/26 (2013.01); G01R 27/2605 (2013.01); H02M 7/49 (2013.01); G01R 31/42 (2013.01); H02M 2001/0009 (2013.01);
Abstract
Disclosed herein is a capacitance estimation apparatus of a DC-link capacitance in an inverter. The apparatus according to the present invention may estimate a DC-link voltage, and compare it with a ripple size of the measured DC-link voltage to estimate a DC-link capacitance. According to the present invention, the capacitance of the DC-link capacitance contained in the inverter may be estimated in real time to detect the fault status in real time.