Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Anja Heinzelmann

Dirk Herke

Ralf Oestreicher

Volker Reber

A method for supplying a number of electric charging stations with electricity, wherein AC voltage provided by an electricity source is transformed into a prescribed AC voltage level by at least one transformer via at least one star winding and at least one delta winding and subsequently routed via AC voltage lines to the number of electric charging stations and converted directly to direct current in respective charging stations from the number of electric charging stations locally by at least two rectifiers of the charging stations.

Method and device for operating charging stations

A circuit system for a charging station which is configured to charge an energy store in a vehicle, the circuit system including a transformer with transformer outputs which are DC-isolated from one another, a first subsystem and a second subsystem each being connected to one of the transformer outputs. The first subsystem and the second subsystem each include a rectifier which has a DC-DC converter connected upstream of it, the DC-DC converter being coupled to a changeover logic unit on its input side or on its output side. In particular, provision is made for the first subsystem to be connected to a delta circuit in the transformer output and for the second subsystem to be connected to a star circuit in the transformer output.

Growing community of inventors

Stuttgart, Germany

Anja Heinzelmann