容性本安电路放电模型及放电特性分析  

Discharge model and characteristic analysis of capacitive intrinsic safety circuit

作　　者：赵永红 ZHAO Yong-hong(CCTEG Taiyuan Research Institute Co.,Ltd.,Taiyuan 030006,China;National Engineering Lab of Coal Mining and Excavation Machinery Equipment,Taiyuan 030006,China)

机构地区：[1]中国煤炭科工集团太原研究院有限公司,山西太原030006 [2]煤矿采掘机械装备国家工程实验室,山西太原030006

出　　处：《煤炭工程》2021年第6期172-175,共4页Coal Engineering

基　　金：山西省重点研发计划项目(201803D121002);中国煤炭科工集团太原研究院有限公司(F2019-SYS25)。

摘　　要：为了较准确把评定电容串联电阻电路和电容端电压对电容放电能量的影响,使设计者在设计时就能够对电容放电能量进行评定,判定其是否达到本质安全防爆要求,综合考虑了电路中线路的电感、电容、电阻参数,建立了与实际电路一致的电容等效电路模型,根据建立的电容等效电路模型,采用不同的放电形式对电容电路放电过程进行仿真测试。并建立了电容放电数学模型,应用MATLAB软件对所建立数学模型进行仿真,绘制了"能量-电阻(W-R)"、"能量—电压(W-U)"两种曲线,可供设计人员查询参考,从而提高电路设计效率,缩短开发周期,节约开发成本。In order to accurately evaluate the effect of capacitor series resistance circuit and capacitor terminal voltage on capacitor discharge energy, and enable the designer to evaluate the capacitor discharge energy and judge whether it meets the requirement of intrinsic safety and explosion protection, the capacitance equivalent circuit model which is consistent with the actual circuit is established considering the parameters of inductance, capacitance and resistance of the circuit. And different discharge forms are used to simulate and test the discharge process of the capacitor circuit. The mathematical model of capacitor discharge is established, and the simulation of the mathematical model is carried out using MATLAB, and the energy-resistance curve and energy-voltage curve are drawn, which can offer references for designers, thus to improve efficiency of circuit product design, and shorten the development cycle and cost.

关 键 词：本安电路 容性电路 放电特性 电路模型 

分 类 号：TD685[矿业工程—矿山机电]