Power distribution switching device

A switching device and voltage conversion technology, which can be used in the direction of conversion equipment that can be converted to DC without intermediate conversion, and can solve the problem of not being able to provide three-phase 220V output.

Pending Publication Date: 2017-10-20
GUANGZHOU DESIGN & RES INST OF SHIPS & MARINE ENG +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide a power distribution switching device, which

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Embodiment Construction

[0016] A power distribution switching device according to the present invention includes a voltage access module for connecting three-phase 380V voltage and single-phase 220V voltage, and a voltage transformation module for converting three-phase 380V voltage into three-phase 220V voltage. A voltage conversion module that converts three-phase or single-phase 220V voltage into three-phase 220V voltage, and a voltage output module that outputs three-phase 220V voltage. The voltage conversion module includes a first voltage input terminal connected to the transformed three-phase 220V voltage and the access converter, and the three-phase access lines of the three-phase voltage are respectively connected to the first group of the access converter The first three connections of the terminal, one phase of the three-phase access line is repeatedly connected to the fourth access terminal; the second voltage input terminal is connected to the single-phase 220V voltage, and the zero line ...

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Abstract

The invention discloses a power distribution switching device comprising a voltage access module for access of a three-phase 380-V voltage and a single-phase 220-V voltage, a voltage transformation module for transforming a three-phase 380-V voltage into a three-phase 220-V voltage, a voltage conversion module for converting a three-phase or single-phase 220-V voltage into a three-phase 220-V voltage, and a voltage output module for outputting the three-phase 220-V voltage. Therefore, conversion from single-phase shore power to three-phase power supply is realized. The power distribution switching device is not only suitable for a situation only with power with a single-phase 220-V voltage but also suitable for a situation providing a three-phase220-V voltage; and a problem that the existing ship power distribution device can not provide a three-phase 220-V output at the single-phase 220-V power is solved. Power can be provided for the ship on the condition of three-phase 220-V power supply and no single-phase 220-V shore power converter is needed. Therefore, power can be provided for ships on different conditions and a ship distribution problem in various environments is solved.

Description

technical field [0001] The invention relates to a power distribution switching device, in particular to a three-phase power distribution switching device for ships. Background technique [0002] Ships often need to berth at different docks for rest and replenishment during the voyage, just like charging the ship. However, when docking in some remote mountainous areas, the local wharf can only provide single-phase 220V shore power, and the ship's 220V power supply system is generally designed according to the three-phase 220V power distribution system. For this reason, the shipowner will require the ship to provide three-phase power supply during design. 380V and single-phase 220V shore power connection devices to deal with this situation. [0003] However, such a design often encounters the following dilemmas: first, if the single-phase 220V shore power is directly connected to the 220V busbar of the switchboard, only one phase of the load on the three-phase busbar on board...

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Application Information

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IPC IPC(8): H02M5/14H02M5/12
CPCH02M5/12H02M5/14
Inventor 戴小丹
Owner GUANGZHOU DESIGN & RES INST OF SHIPS & MARINE ENG
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