Silicon controlled composite switch of intelligent zero-crossing switching

A composite switching, zero-crossing switching technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation and other directions, can solve the problem of not meeting the conduction conditions of the thyristor and unable to operate reliably.

Active Publication Date: 2013-03-06
南京鹰纳视机器人有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent specifically describes that in the conduction process, the thyristor only has a trigger signal, but there is no voltage drop, and the conduction condition of the thyristor is not sati

Method used

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  • Silicon controlled composite switch of intelligent zero-crossing switching
  • Silicon controlled composite switch of intelligent zero-crossing switching
  • Silicon controlled composite switch of intelligent zero-crossing switching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 , 2 , 3, 6, 7, and 8, a kind of thyristor composite switch with intelligent zero-crossing switching includes a control circuit 1 and a thyristor composite switch 2, and the thyristor composite switch 2 includes a bidirectional thyristor SCR, a first electromagnetic switch K1, a second electromagnetic switch K2 and a resistor R, the bidirectional thyristor SCR has a control terminal G and a first main terminal T1 and a second main terminal T2, and the first of the bidirectional thyristor SCR The main terminal T1 and the second main terminal T2 are connected in parallel with the two ends of the normally open contact K1-1 of the first electromagnetic switch K1, and the normally open contact K2-1 of the second electromagnetic switch K2 is connected in series with the resistor R; by the second The two ends of the series circuit composed of the normally open contact K2-1 of the electromagnetic switch K2 and the resistor R are connected in parallel to the tw...

Embodiment 2

[0054] Such as figure 1 , 4 , 5, 6, 7, and 8, a kind of thyristor composite switch with intelligent zero-crossing switching includes a control circuit 1 and a thyristor composite switch 2, and it: the thyristor composite switch 2 includes a bidirectional The thyristor SCR, the first electromagnetic switch K1, the second electromagnetic switch K2 and the resistor R, the bidirectional thyristor SCR has a control terminal G, the first main terminal T1 and the second main terminal T2, and the second electromagnetic switch K2 The normally open contact K2-1 is connected in series with the resistor R; the two ends of the series circuit formed by the normally open contact K2-1 of the second electromagnetic switch K2 and the resistor R are connected to the first main terminal T1 and the first main terminal T1 of the bidirectional thyristor SCR. The two main terminals T2 are connected in parallel; the two ends of the normally open contact K1-1 of the first electromagnetic switch K1 ar...

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PUM

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Abstract

The invention disclose a silicon controlled composite switch of intelligent zero-crossing switching, which comprises a control circuit and a silicon controlled composite switch, wherein the silicon controlled composite switch comprises a bidirectional silicon controlled rectifier (SCR), a first electromagnetic switch K1, a second electromagnetic switch K2 and a resistor R, wherein the bidirectional SCR is provided with a control terminal G and first and second main terminals T1 and T2; and the first main terminal T1 and the second main terminal T2 of the bidirectional SCR are connected with two ends of a normally open contact K1-1 of the first electromagnetic switch K1 in parallel; a normally open contact K2-1 of the second electromagnetic switch K2 is connected with the resistor R in series; two ends of a series circuit composed of the normally open contact K2-1 of the second electromagnetic switch K2 and the resistor R are connected to two ends of the normally open contact K1-1 of the first electromagnetic switch K1 in parallel. The invention has the advantages of conducting current zero-crossing SCR and is more reliable switchng-out process and the like.

Description

technical field [0001] The invention relates to a thyristor composite switch with intelligent zero-crossing switching, which is a device for controlling capacitor switching, and is an important part of a reactive power compensation device for a power grid, and the performance of the switching element is of great importance to wireless The reliability of the power compensation device plays a very important role. Background technique [0002] In the implementation process of power grid transformation, it is often necessary to add a shunt capacitor reactive power compensation device, which plays a positive role in improving the quality of power supply voltage, tapping the potential of power supply equipment, reducing line loss and saving energy. [0003] Most of the early reactive power compensation devices used switching methods such as AC contactors and thyristor electronic switches. AC contactors will generate large inrush currents and overvoltages when capacitors are switch...

Claims

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Application Information

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IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 顾金华
Owner 南京鹰纳视机器人有限公司
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