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:
Apr. 01, 2025
Filed:
Jan. 17, 2024
The Trustees of Columbia University IN the City of New York, New York, NY (US);
Longmax Corporation Ltd., Tsim Sha Tsui, HK;
William-Michael Eull, New York, NY (US);
Liwei Zhou, New York, NY (US);
Weizhong Wang, New York, NY (US);
Gangqi Cen, Tsim Sha Tsui, HK;
Matthias Preindl, New York, NY (US);
The Trustees of Columbia University in the City of New York, New York, NY (US);
Longmax Corporation Ltd., Tsim Sha Tsui, HK;
Abstract
A system may mitigate leakage currents in charging stations for electric vehicles. The system may include a bank of one or more parallel capacitors per phase electrically coupled to an AC voltage source, wherein a neutral point of the one or more parallel capacitors is electrically coupled to a DC ground; a bank of one or more inductors per phase electrically coupled to the one or more parallel capacitors, wherein each inductor is in series with and downstream from one capacitor; a rectifier electrically coupled to and downstream from the one or more parallel inductors, wherein the rectifier converts the AC voltage source to a DC voltage for supply to a battery; a DC bus electrically coupled to the rectifier; and a controller, wherein the controller is configured to mitigate leakage currents by controlling a voltage of at least one of the bank of one or more parallel capacitors.