Patent ID: 11919416
Assignee: RESILIENT POWER SYSTEMS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 15:
16. A method comprising:
receiving, in a controller of an electric vehicle (EV) charging system, an indication of connection of at least one EV to a dispenser coupled to the EV charging system, wherein the EV charging system comprises:
a plurality of first converters to receive grid power at a medium voltage AC voltage from a distribution network, each of the plurality of first converters comprising a front-end converter to receive and convert the medium voltage AC voltage to a DC voltage and a high frequency converter to convert the DC voltage to a high frequency voltage;
a single high frequency transformer coupled to the plurality of first converters; and
a plurality of unidirectional rectifiers coupled to the single high frequency transformer;

receiving a charge command for the at least one EV; and
charging the at least one EV based at least in part on the charge command comprising:
measuring a charging voltage or current provided to the at least one EV;
generating an error signal based on a comparison of the charge command and the charging voltage or current; and
controlling the front-end converter of at least one of the plurality of first converters based at least in part on the error signal to supply a charging level to the at least one EV.