Apparatus for power line communication
AssigneeLsis Co., Ltd.
InventorYoung Gyu Yu
Life of this patent
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Abstract
Disclosed is an apparatus for power line communication. More specifically, in order to solve a problem of the conventional art, in which the magnitude of power line communication signals exceeds a reference value allowed in the law, the apparatus controls a communication signal to be selectively output a communication target phase among phases of a three-phase power line. Accordingly, it is possible to maintain the magnitude of the output communication signal to be low. Further, it is possible to reduce distortion of a power signal, caused by the communication signal, and malfunction of other power facilities due to the distortion. Further it is possible to easily and simply perform initiation of the power line communication.
Claims6
An apparatus for three-phase power line communication, the apparatus comprising:
- a connector connected to each phase of a three-phase power line, so that a communication signal transmitted to a communication target device provided to each phase is transferred thereto;
- and
- a controller configured to output the communication signal and control the connector,
- wherein the connector includes:
- a coupling transformer configured to convert the communication signal output from the controller into a form capable of being transferred to the three-phase power line;
- and
- a coupling capacitor configured to convert the communication signal into a form capable of being transferred to each phase,
- wherein the controller is further configured to control the connector such that the communication signal is selectively transmitted to at least one phase of each phase of the three-phase power line, and
- wherein the controller includes a zero cross detector configured to detect a phase of each phase using a zero cross principle.
Dependencies are inferred from the claim text.