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Composite switch and its zero-crossing switching control and self-switching fault judgment method

A compound switch and switch technology, applied in the field of switches, can solve problems such as inability to detect switching faults

Inactive Publication Date: 2019-06-25
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the existing switches cannot detect their own switching faults.

Method used

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  • Composite switch and its zero-crossing switching control and self-switching fault judgment method
  • Composite switch and its zero-crossing switching control and self-switching fault judgment method
  • Composite switch and its zero-crossing switching control and self-switching fault judgment method

Examples

Experimental program
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Effect test

Embodiment

[0075] Embodiment: Composite switch, see Figure 9 As shown, including No. 1 node 701, No. 2 node 702, No. 1 switch 201, No. 2 switch 202, No. 3 switch 203, No. 4 switch 204, No. 5 switch 205, No. 6 switch 206, node M a , node M b , node M c , node M d , node M e , inductance L a , capacitance C a , capacitance C 0 , capacitance C 2 , Diode D 1 , Diode D 2 , Diode D 3 , Diode D 4 , optocoupler OPT, resistor R 0 , resistance R 1 , resistance R 2 , switch K a , a magnetic drive power circuit 502 , a silicon drive circuit 503 , a self-use power supply module 901 , a ground terminal SGND and a controller 107 including a pulse counter 805 . Inductance L a The inductance is 30-50 microhenries. It also includes a memory 106 and a display 504 respectively connected to the controller. Toggle switch K a Including thyristor switch K b and latching relay switch K c , the optocoupler OPT includes LED D 5 and phototransistor Q 0 ;SCR switch K b One end of the latchin...

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PUM

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Abstract

The invention discloses a composite switch and methods of passing-zero switching control and self-switching fault judgment thereof, and belongs to the field of switch technology. The composite switch is capable of detecting self-switching fault, accurately detecting the passing zero point of alternating current voltage and switching. One end of a controlled silicon switch Kb and one end of a magnetic latching relay switch Kc are connected with number one node respectively. The other end of the controlled silicon switch Kb and one end of an inductance La are connected with a node Ma respectively. The other end of the inductance La and one end of number six switch are connected with a node Mb respectively. The other end of the magnetic latching relay switch Kc, the other end of the number one switch and the other end of number two switch are connected with a node Mc respectively. One end of a capacitor C2, the other end of number four switch, an anode end of a diode D1 and a cathode end of a diode D3 are connected with a node Md respectively. A silicon-driven circuit is connected with a control end and a controller of the controlled silicon switch Kb respectively. Magnetism-driven circuit is connected with a control end and a controller of the magnetic latching relay switch Kc respectively.

Description

technical field [0001] The invention relates to the technical field of switches, in particular to a compound switch and its zero-crossing switching control and self-switching fault judgment method. Background technique [0002] In the existing switch connected to the AC circuit, when the current on the AC circuit is relatively large, sparks will appear when the switch is opened or closed, and the switch will be burned out when the spark is severe. The spark generated when the switch is opened or closed is caused by the large inrush current when the switch is opened or closed. In order to reduce the inrush current when the switch is opened or closed, the inrush current when the switch is opened or closed can be reduced only when the switch is opened or closed when the voltage of the AC voltage crosses zero. And the existing switch all can't detect self switching fault. Therefore, it is very necessary to design a switch that can not only detect its own switching fault, but a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/327G01R19/175H02H3/02
CPCG01R19/175G01R31/327H02H3/021
Inventor 不公告发明人
Owner CHINA JILIANG UNIV