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DC plc relay device, system and combiner box

A relay device and transceiver technology, applied in the field of DC PLC, can solve problems affecting the communication quality of DC PLC, and achieve the effect of improving communication quality

Active Publication Date: 2021-11-02
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the communication distance between devices is long, the transmission line effect introduced by the parasitic parameters of the longer DC power line will affect the quality of DC PLC communication

Method used

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  • DC plc relay device, system and combiner box
  • DC plc relay device, system and combiner box
  • DC plc relay device, system and combiner box

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] see figure 1 , the embodiment of the present invention discloses a DC PLC relay device, including a two-port network and a controller, wherein:

[0040] Terminal 1 and terminal 1' constitute one port P1 of said two-port network, and terminal 2 and terminal 2' constitute another port P2 of said two-port network;

[0041] The two-port network includes a capacitor module C; the positive connection terminal 1 and terminal 2 of the capacitor module C, and t...

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Abstract

The application discloses a DC PLC relay device, a system and a combiner box to improve the communication quality of DC PLC during long-distance communication between devices. The device includes a two-port network and a controller; terminal 1 and terminal 1' constitute one port P1 of the two-port network, and terminal 2 and terminal 2' constitute the other port P2; the two-port network contains a capacitor module C and two PLCs Transceiver T1, T2; the positive pole of C is connected to terminal 1 and terminal 2, and the negative pole of C is connected to terminal 1' and terminal 2'; T1 is set on the DC power line between C and P1, and T2 is set on the DC power line between C and P2 above; the weak current terminals of T1 and T2 are connected to the controller; the controller demodulates and modulates the signal collected by T1 from the DC power line and then sends it to T2, and T2 sends it to the DC power line; and / or the controller connects T2 The signal collected from the DC power line is sent to T1 after demodulation and modulation, and then sent to the DC power line by T1.

Description

technical field [0001] The invention relates to the technical field of DC PLC, more specifically, to a DC PLC relay device, system and combiner box. Background technique [0002] DC PLC communication (Power Line Carrier Communication, power line carrier communication) is a communication method in which DC power lines are used as the transmission medium of carrier signals, and can be used for communication between devices with DC power lines connected to each other. For example, in a photovoltaic system, the power optimizer installed on the photovoltaic module side and the inverter installed on the grid-connected point can communicate through DC PLC communication; in the energy storage system, the power optimizer installed on the same DC bus DC PLC communication can be performed between the storage battery and the energy storage converter. [0003] However, when the communication distance between devices is long, the transmission line effect introduced by the parasitic param...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/58H04B3/54
CPCH04B3/542H04B3/548H04B3/58
Inventor 俞雁飞倪华武京杨宗军
Owner SUNGROW POWER SUPPLY CO LTD
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