ELECTRIC VEHICLE BATTERY CHARGER COMPRISING A PFC CIRCUIT

摘要

The battery charger (C) for electric vehicles comprises a voltage converter (DC/DC CONY), a power factor correction circuit (PFC) connected upstream of the voltage converter (DC/DC CONY), a controller circuit (PFC CNTR) operatively connected to the correction circuit (PFC) and suitable for piloting the correction circuit (PFC) for the correction of the power factor in the battery charger (C), a retroaction line (L) connected to the output of the voltage converter (DC/DC CONY) and to an input of the controller circuit (PFC CNTR), wherein the controller circuit (PFC CNTR) is suitable for varying the output voltage (VPFC) of the correction circuit (PFC) within a predefined voltage interval and according to the output voltage (VDCOUT) of the voltage converter (DC/DC CONY), in order to let the voltage converter (DC/DC CONY) operate as much as possible around the point of maximum efficiency.

主权项

1. Battery charger (C) for electric vehicles, comprising:
at least a voltage converter (DC/DC CONY); at least a power factor correction circuit (PFC) connected upstream of said voltage converter (DC/DC CONY); at least a controller circuit (PFC CNTR) operatively connected to said correction circuit (PFC) and suitable for piloting said correction circuit (PFC) for the correction of the power factor in said battery charger (C); wherein it comprises at least a retroaction line (L) connected to the output of said voltage converter (DC/DC CONY) and to at least an input of said controller circuit (PFC CNTR), said controller circuit (PFC CNTR) being suitable for varying the output voltage (VPFC) of said correction circuit (PFC) within a predefined voltage interval and according to the output voltage (VDCOUT) of said voltage converter (DC/DC CONY), in order to let said voltage converter (DC/DC CONY) operate as much as possible around the point of maximum efficiency.