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:
Oct. 29, 2024
Filed:
May. 18, 2022
Applicant:
Airbus Sas, Blagnac, FR;
Inventors:
Florian Kapaun, Taufkirchen, DE;
Gerhard Steiner, Taufkirchen, DE;
Assignee:
AIRBUS SAS, Blagnac, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 19/00 (2006.01); G01R 19/165 (2006.01); G01R 31/56 (2020.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/0009 (2021.05); G01R 19/16571 (2013.01); G01R 31/56 (2020.01);
Abstract
To enable early detection of AC insulation faults, or to permit easier, faster and more accurate measurement of small currents in inverters, a current measuring circuit for a converter is provided. The current measuring circuit has a positive supply rail, a negative supply rail, a reference potential rail and a current measuring device that contains a Y-capacitor and a current sensor connected in series therewith. The load current can be decoupled from the measurement current through the at least one Y-capacitor, so that at high load currents even small fault currents can be acquired reliably with the current sensor.