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. 10, 2019
Filed:
Dec. 22, 2015
Applicant:
Sma Solar Technology Ag, Niestetal, DE;
Inventor:
Martin Putz, Kassel, DE;
Assignee:
SMA Solar Technology AG, Niestetal, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 19/00 (2006.01); G01R 31/28 (2006.01); G01R 15/18 (2006.01); H02M 5/42 (2006.01); H02H 1/00 (2006.01); H02J 1/02 (2006.01); G01R 31/12 (2006.01);
U.S. Cl.
CPC ...
G01R 31/2832 (2013.01); G01R 15/185 (2013.01); G01R 19/0015 (2013.01); G01R 19/0046 (2013.01); H02M 5/42 (2013.01); G01R 31/12 (2013.01); H02H 1/0015 (2013.01); H02J 1/02 (2013.01);
Abstract
A method for detecting high-frequency AC currents in a DC circuit including a common mode choke with two partial windings includes tapping voltages dropping across the two partial windings due to the AC current, superposing the tapped voltages, and obtaining a superposed AC voltage wherein differential mode portions of the tapped voltages are summed constructively and common mode portions of the voltages are summed destructively; and measuring the superposed AC voltage.