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Single-phase switching device with three independent input AC source output

A three-phase switching, AC source technology, applied in the direction of conversion equipment that can be converted to DC without intermediate conversion, and can solve problems such as increasing control complexity.

Active Publication Date: 2017-11-28
XIAN ACTIONPOWER ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach increases the complexity of the control

Method used

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  • Single-phase switching device with three independent input AC source output
  • Single-phase switching device with three independent input AC source output
  • Single-phase switching device with three independent input AC source output

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0018] Refer to attached figure 1 shown. The single-three-phase switching device with three independent input AC sources and output consists of a coupling unit and a single-three-phase switching unit. Three independent input AC sources have synchronization signals for simultaneous output.

[0019] The coupling unit includes three transformers, the primary side of each transformer is correspondingly connected to the live wire of an independent AC source, the output terminals of the three primary sides are connected to the same node D, and the secondary sides of the three transformers are connected in series to form a loop. The single-three-phase switching unit includes a first switch group and a second switch group, and the first switch group and the second switch group both include two control switches, and the two switches of the first switc...

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PUM

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Abstract

The invention relates to a single-three-phase switching device with three independent input AC sources and outputs, the input side of which is three independent AC sources with synchronous signals, and the frequency, phase and amplitude of the three independent AC sources are adjustable ; The output side is a single-phase or three-phase AC power supply; the present invention includes a coupling unit and a single-phase three-phase switching unit. The principle adopted by the three independent input AC source output single-phase three-phase switching devices is as follows: the primary side of the coupling transformer and the secondary side relay are not closed at the same time. When the secondary side relay is closed, the AC power supply is a 3-phase output; the primary side is closed. When the AC power supply is single-phase output. The invention is simple and easy to implement, can realize the single-phase and three-phase switching of the AC power supply, and can complete the current equalization processing of the single-phase output without complex control.

Description

technical field [0001] The invention relates to a three-independent input AC source output single-three-phase switching device, which can realize single-three-phase output switching of three independent AC sources with synchronous signals through the switching of relays. Background technique [0002] The traditional single-phase three-phase AC power switching device inputs three independent AC sources. When outputting a single phase, it needs to sample the current of the independent AC sources and realize current sharing processing through closed-loop control. This approach increases the complexity of the control. Contents of the invention [0003] The purpose of the present invention is to provide a simple and easy-to-implement single-phase three-phase AC power switching device. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] A single-three-phase switching device with output from three independent input A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/32
Inventor 韩海港
Owner XIAN ACTIONPOWER ELECTRIC