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. 27, 2026
Filed:
Nov. 27, 2023
Dr. Ing. H.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;
Daniel Spesser, Illingen, DE;
Tim Pfizenmaier, Leonberg, DE;
Florian Mayer, Tamm, DE;
Stefan Endres, Erlangen, DE;
Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart, DE;
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Munich, DE;
Abstract
A method compensates for leakage currents in a protective conductor of an electrical power converter. The method includes: using a first differential current sensor for determining a differential current depending on a phase conductor current in a phase conductor and a neutral conductor current in a neutral conductor; feeding a compensation current into the phase conductor and/or into the neutral conductor via a first compensation circuit; using a second differential current sensor for capturing a signal representing remaining residual leakage current; converting the signal representing the residual leakage current to a frequency domain; generating a compensation signal for the residual leakage current in a frequency-selective manner; converting the compensation signal to a time domain; supplying the converted compensation signal converted to the first compensation circuit or a second compensation circuit; and feeding a residual compensation current corresponding to the compensation signal into the phase conductor(s) and/or into the neutral conductor.