Power-line communication coupling

摘要

In some embodiments, a system includes a power system coupled to a power bus, and a power line communication (PLC) gateway coupled in series with the power bus. In other embodiments, a system includes first and second power circuits coupled in series with a power bus, and first and second power-line communication circuits coupled in series with the power bus. In additional embodiments, a system includes a power converter coupled to a power bus and having one or more switching frequencies, and a power-line communication circuit coupled to the power bus and having one or more communication frequencies, where at least one of the switching frequencies is substantially greater than at least one of the communication frequencies.

主权项

1. A power system for converting a direct current (DC) input from a DC source to an alternating current (AC) output supplied to an AC power bus, the power system comprising:
a first and a second output; a plurality of power subsystems wired in series between the first output and the second output, wherein each power subsystem of the plurality of subsystems comprises:
a power converter to (i) receive the DC input from a photovoltaic (PV) source and (ii) convert the DC input to a corresponding AC output;a power line communication module for communication over the AC power bus based on at least one communication frequency different from a frequency of the AC output supplied to the AC power bus; anda transformer for galvanic isolation, wherein each of the plurality of power subsystems is wired in series between the first output and the second output by a primary winding of the corresponding transformer.