Patent ID: 11881760
Assignee: MAHLE INTERNATIONAL GMBH
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 2:
3. A method for extracting a power value from an AC electrical grid with an on-board charger (OBC) that comprises a power factor corrector (PFC) having a three phase active front end (AFE) connected to the AC electrical grid, a DC/DC converter receiving a regulated DC voltage from the PFC and configured to charge a high voltage battery and a switch arranged between the AFE and the AC electrical grid and is able to interrupt current flowing between two phase arms of the three phase AFE, the method comprising:
in response to the PFC being connected to the three phase electric grid, extracting a power value equal to a rated reference maximum power extracted from a three phase electrical grid PMAX3∅, by actuating the switch in an open state such that the switch interrupts current flowing between the two phase arms of the three phase AFE;
in response to the PFC being connected to a single phase electrical grid, extracting the power value equal to a reference ⅔ PMAX3∅ by actuating the switch in a closed state such that the switch allows current to flow between the two phase arms of the three phase AFE, wherein a third phase arm of the AFE withstands a maximum value of the line current IMAX and the two phase arms of the three phase AFE withstand a value of the line current equal to ½ IMAX; and
in response to the PFC being connected to a split-phase or a two phase electrical grid, extracting the power equal to a reference ⅔ PMAX3∅ by actuating the switch in a closed state such that the switch allows current to flow between the two phase arms of the three phase AFE, wherein the third phase arm of the three phase AFE withstands a maximum value of the line current IMAX and the two phase arms of the AFE withstand a value of the line current equal to ½ IMAX.