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High-stability bus type composite switch resisting voltage impact

A technology of anti-voltage shock and composite switch, which is applied in the direction of electronic switches, electrical components, pulse technology, etc., can solve the problems of sensitive thyristor voltage change rate, weak overcurrent withstand capacity, high failure rate of composite switch, etc., to make up for the intolerance Effects of current and voltage impact, controllable grain morphology, enhanced safety and stability

Inactive Publication Date: 2015-12-16
扬中市佳旺华电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is well known that the thyristor is a semiconductor element that is sensitive to thermal and electrical shocks. Once the impulse current or voltage exceeds its allowable value, it will be permanently damaged immediately; The ability is not strong, there are hidden dangers of breakdown, and the safety and stability are still weak; the actual operation situation has shown that the failure rate of the composite switch is quite high, especially when the harmonic component in the circuit is large

Method used

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  • High-stability bus type composite switch resisting voltage impact

Examples

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Effect test

Embodiment 1

[0025] structured as figure 1 As shown, this embodiment provides a high-stability bus-type composite switch that is resistant to voltage shocks, including a power input terminal, a power conversion circuit, a main control circuit, a switch state monitoring circuit, a composite switch circuit, an output circuit, and a capacitor discharge circuit. ,in:

[0026] The input terminal of the power supply is connected to the main control circuit through the power conversion circuit, so as to supply power for the whole system. The signal output terminal of the main control circuit is connected to the input terminal of the composite switch circuit, and an output terminal of the composite switch circuit is connected to the main control circuit through the switch state monitoring circuit. The input terminal, the other output terminal of the composite switch circuit is connected to the capacitor discharge circuit through the output terminal of the power supply;

[0027] The composite swit...

Embodiment 2

[0036] structured as figure 1 As shown, this embodiment provides a high-stability bus-type composite switch that is resistant to voltage shocks, including a power input terminal, a power conversion circuit, a main control circuit, a switch state monitoring circuit, a composite switch circuit, an output circuit, and a capacitor discharge circuit. ,in:

[0037] The input terminal of the power supply is connected to the main control circuit through the power conversion circuit, so as to supply power for the whole system. The signal output terminal of the main control circuit is connected to the input terminal of the composite switch circuit, and an output terminal of the composite switch circuit is connected to the main control circuit through the switch state monitoring circuit. The input terminal, the other output terminal of the composite switch circuit is connected to the capacitor discharge circuit through the output terminal of the power supply;

[0038]The composite switc...

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Abstract

The invention discloses a high-stability bus type composite switch resisting voltage impact. The high-stability bus type composite switch comprises a power supply input end, a power supply conversion circuit, a main control circuit, a switch state monitoring circuit, a composite switching circuit, an output circuit and a capacitance discharging circuit, wherein the power supply input end is connected to the main control circuit through the power supply conversion circuit, so that power is supplied to the whole system; the signal output end of the main control circuit is connected to the input end of the composite switching circuit; one output end of the composite switching circuit is connected to the input end of the main control circuit through the switch state monitoring state; and another output end of the composite switching circuit is connected to the capacitance discharging circuit through the power supply output end. According to the invention, the fault rate of the composite switch in the use process can be obviously decreased; the use performance of the composite switch is improved; the disadvantages that the composite switch is non-resistant to current and voltage impact can be made up; in practical applications, compared with the traditional composite switch, the fault rate is obviously decreased; and the safe and stable performances are greatly improved.

Description

technical field [0001] The invention relates to the technical field of production and manufacture of electrical equipment, in particular to a high-stability bus-type composite switch resistant to voltage shocks. Background technique [0002] As an important part of the reactive power compensation system, the capacitor switching switch is the action execution part to realize the switching operation of the reactive power compensation capacitor; its operation will directly affect the working efficiency of the reactive power compensation device; the traditional reactive power compensation device Capacitor switching is mainly achieved by relays or thyristors alone, which has the disadvantages of large inrush current and large power consumption, and has been gradually replaced by intelligent composite switches. The components, and the performance of the switching element plays a very important role in the reliability of the reactive power compensation device. [0003] At present,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K17/72
Inventor 何春娣李德顺
Owner 扬中市佳旺华电器有限公司