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Wired network port with PLC on power lines If an original charging station can be used for the test, an AAN and/or AMN/DC-charging-AN might not be required for PLC communication. If the presence of the AMN/DC-charging-AN prevents proper PLC communication with the original charging station or if the PLC communication needs to be simulated by means of a piece of associated equipment (e.g. a PLC modem) instead of the original charging station, it is necessary to add an AAN between the AE (e.g. the PLC modem) and the AMN/DC-charging-AN output (vehicle side), as shown in Figure 9. The circuit in Figure 9 provides a common mode termination by the AMN / DC-charging-AN HV-AN. In order to minimize emission from the PLC modem of the vehicle, an attenuator is located between the powerline and the PLC modem at the AE side in the circuit for emission tests. This attenuator consists of two resistors in combination with the input/output impedance of the PLC modem. The value of the resistors depends on the design impedance of the PLC modems and the allowed attenuation for the PLC system. |
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Figure 9 Example of AAN with Signal/Control port with PLC on AC or DC power lines |
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