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矿用开关柜会受到哪些干扰嘛?
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矿用开关柜会受到哪些干扰嘛?

发布日期:2018-01-19 作者:贵州开关柜 点击:

矿用开关柜会受到哪些干扰嘛?

What will the mine switch cabinet be disturbed?

贵州开关柜

随着现代技术的进步,我们所使用的设备中绝大部分都要用到电力,矿用生产中也不例外,所以会配备专门的矿用开关柜。但是在实际生产作业过程中,矿用开关柜很容易受到电磁干燥,这类问题要怎么预防呢?

With the development of modern technology, most of the equipment we use will use electric power, and mine production is no exception, so special mine switch cabinet will be equipped. But in the actual production process, the mine switch cabinet is easy to be subjected to electromagnetic drying, how to prevent this kind of problem?



比如说在矿用开关柜的管导通瞬间,变压器初级线圈会产生很大的涌流,并在初级线圈的两端出现较高的浪涌尖峰电压;而在其开关断开瞬间,由于初级线圈的漏磁通,致使一部分能量没有从一次线圈传输到二次线圈,储藏在漏感中的这部分能量将和开关管本身的极间电容、电阻形成带有尖峰的衰减振荡。

For example, through instant guide in the mine switch cabinet, transformer primary coil will produce large inrush current, and voltage surge peak high in both ends of the primary coil; and in the switch off instantly, because of leakage flux of the primary coil, resulting in a part of the energy from a coil transmission to the two coil. Stored in the leakage inductance in this part of the energy and the switch itself inter electrode capacitance and resistance formed with peak attenuation oscillation.



有时候大概矿用开关柜输出二极管在正向导通时,PN接内的电荷被积累,二极管加反向电压时积累的电荷将消失并产生反向电流。由于二次整流回路中,在开关转换时频率很高,所以在短时间内要让存储电荷消失就产生反向电流的浪涌。

Sometimes when the output diode of a switchgear is in positive conduction, the charge inside the PN is accumulated. The charge accumulated on the diode plus reverse voltage will disappear and generate a reverse current. Due to the high frequency of the switch conversion in the two rectifying circuit, a surge of the reverse current is generated in a short time.




贵州开关柜提醒由于直流输出中的分布电容、分布电感的存在,使因浪涌引起的干扰成为高频衰减减振荡。这样一来高频变压器初级线圈,矿用开关柜的开关管和滤波电容构成的高频开关电流环路可能产生较大的空间辐射,形成辐射干扰。

The Guiyang switch cabinet reminds the disturbance caused by the surge due to the existence of the distributed capacitance and the distributed inductance in the DC output. In this way, the high frequency switch current loop composed of the high frequency transformer primary coil, the switch tube and the filter capacitor of the mine switchgear may generate larger space radiation and form radiation interference.




当其叠加在矿用开关柜的关断电压上,就会形成关尖峰电压,这个噪音声会传导到输入输出端,形成传导干扰,对矿用开关柜的正常运行产生极大的影响。

When it is superimposed on the switch off voltage of the mine switchgear, it will form a spike voltage, which will transmit to the input and output terminals, and form a conduction interference, which will have a great impact on the normal operation of the mining switchgear.

  


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