TRANSFORMER FOR POWER LINE COMMUNICATION

• US 20150123644A1
• Filed: 10/10/2014
• Published: 05/07/2015
• Est. Priority Date: 11/04/2013
• Status: Active Grant

• Current Assignee: LSIS Co. Ltd. (LS Corporation)
• Original Assignee: LSIS Co. Ltd. (LS Corporation)
• Inventors: YOU, Chang Sung, LEE, Seong Joon
• Granted Patent: US 9,570,232 B2
• Time in Patent Office: Days
• US Class Current: 323/355
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H04B 2203/5491 using filtering and bypassing
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

Disclosed is a transformer for power line communication, capable of performing power line communication without being influenced by voltage attenuation due to voltage conversion. The transformer for power line communication includes: a transforming unit configured to convert a high primary voltage into a low secondary voltage, or convert a low secondary voltage into a high primary voltage; a separation unit configured to separate a data signal from a primary voltage input thereto; and a coupling unit configured to couple the data signal with the low secondary voltage.

Claims

1. A transformer for power line communication, comprising:

a transforming unit configured to convert a high primary voltage into a low secondary voltage, or convert a low secondary voltage into a high primary voltage;

a separation unit configured to separate a data signal from a primary voltage input thereto; and

a coupling unit configured to couple the data signal with the low secondary voltage.

2. The transformer of claim 1, further comprising a first filter configured to filter an electric signal from a primary voltage input thereto, and to provide only the electric signal to the transforming unit.

3. The transformer of claim 1, further comprising an amplifying unit configured to amplify a data signal separated by the separation unit.

4. The transformer of claim 1, wherein the separation unit is configured as a high voltage analogue front end.

5. The transformer of claim 1, wherein the coupling unit is configured as a low voltage analogue front end.

6. The transformer of claim 5, further comprising a second filter configured to filter a combined signal of the data provided from the coupling unit and the secondary voltage, and to output the combined signal to the transforming unit.

7. A transformer for power line communication, comprising:

a transforming unit configured to convert a high primary voltage into a low secondary voltage, or convert a low secondary voltage into a high primary voltage;

a separation unit configured to separate a data signal from a primary voltage input thereto;

a coupling unit configured to couple the data signal with the low secondary voltage;

a first modem configured to receive the data signal from the separation unit, and to transmit the data signal via main line communication; and

a second modem configured to receive meter-reading data via communication, and to provide the meter-reading data to the coupling unit.

8. The transformer of claim 7, further comprising a controller configured to control transmitting and receiving of data of the first modem and the second modem through an external bus.