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Load control systems, DC loads and terminal units

A load control system and DC load technology, which is applied in the direction of DC network circuit devices, two-wire DC circuits, telemetry/remote control selection devices, etc., and can solve problems such as the inability to ensure the S/N ratio

Inactive Publication Date: 2017-11-03
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, despite the Image 6 In the case where the amplitude of the voltage fluctuation shown in A is small, there is no great influence on the S / N ratio of the communication signal, but due to Image 6 The large-amplitude voltage fluctuation shown in B causes a large drop in the S / N ratio of the communication signal, and a specific S / N ratio cannot be guaranteed

Method used

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  • Load control systems, DC loads and terminal units
  • Load control systems, DC loads and terminal units
  • Load control systems, DC loads and terminal units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown in A and 1B, the load control system 1 of this embodiment includes a plurality of (in the figure 1 In the example of A, there are four) DC loads 3 ( 301 , 302 , 303 and 304 ) and terminal devices 4 . The number of DC loads 3 and the number of terminal devices 4 connected to the wiring line 2 can be appropriately changed and is not limited to figure 1 The quantities shown in the example of A.

[0026] The wiring line 2 is connected to an output of a DC / DC converter 5 as a direct current power supply. The wiring line 2 is, for example, a 2-wire line. The DC / DC converter 5 is housed within the distribution board 6 and is connected to the output of an AC / DC converter (not shown). The AC / DC converter is housed in the distribution board 6 and is configured to convert AC power (commercial power) into DC power. DC power that is the output of a photovoltaic power generation device, a fuel cell, a storage battery, and the like can be input to the...

Embodiment 2

[0058] The difference between the load control system 1 of the present embodiment and the load control system 1 of the first embodiment is that the adjustment unit is not installed in each DC load 3 but in the terminal device 4 . Hereinafter, elements of the same kind are assigned the same reference numerals as in Embodiment 1, and descriptions of these elements are appropriately omitted.

[0059] In this embodiment, the adjustment unit is configured to enable the terminal-side communication unit 41 to transmit the communication signal including the control request at different time points (transmission times) between two or more DC loads 3 . Therefore, the control units 32 of the two or more DC loads 3 can stagger the time points (control timing) for controlling the operation state in response to one control request between the two or more DC loads 3 . In short, in the case of receiving an operation input related to these two or more DC loads 3, the terminal device 4 adjusts ...

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PUM

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Abstract

This terminal device (4) comprises a terminal-side communication unit (41) for transmitting and receiving communication signals via a wiring line (2), and a processing unit (42) for imparting a control request to a DC load by means of a communication signal. Each DC load (3) comprises a load-side communication unit (31) for transmitting and receiving communication signals via a wiring line (2), and a control unit (32) for controlling the operating status according to control requests from the device (4). Each DC load (3) is provided with a regulating unit (7) for staggering the control timing with which the control unit (32) controls the operating state according to control requests from the device (4) in such a manner that the timing is staggered between a plurality of DC loads (3).

Description

technical field [0001] The present invention relates to a load control system configured such that a terminal device controls a plurality of DC loads via a DC supply line, and a DC load and a terminal device. Background technique [0002] Conventionally, a DC (direct current) power distribution system has been proposed that is configured to convert an alternating current power source such as a commercial power supply via an AC (alternating current) / DC converter disposed in a distribution board such as a residence or the like Convert to DC power, and distribute the DC power from the distribution board to the DC outlets arranged in each room. Regarding this DC power distribution system, a technique is considered in which a DC supply line serving as a feeder line for DC power also serves as a communication line (see, for example, Japanese Patent Application Laid-Open No. 2009-158116 (hereinafter referred to as "Document 1")). This technology is similar to power line transmissi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q9/00H02J1/00H02J13/00H04B3/54H05B37/02
CPCH02J1/06H05B47/185
Inventor 前田充国吉贤治田边充
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD