复合型本安电路放电特性影响因素分析

现有针对复合型本安电路放电特性的研究或缺少数学分析,或对放电特性影响因素考虑不全面。针对上述问题,分析了复合型本安电路放电原理,推导出复合型本安电路在非振荡状态下的放电电流、功率及能量数学模型,采用Matlab软件对电源电压、电感、电容、电阻等参数对复合型本安电路放电特性的影响进行了仿真研究。结果表明:随着电源电压增大,放电电流和功率稳定值增大,同一时刻的放电能量增大;随着电感增大,对电流的阻碍作用增大,放电功率和能量均逐渐减小;在初始阶段,放电电流、功率和能量不随电容变化而变化,之后均随电容增大而逐渐增大;电阻R越小,对放电电流、功率及能量的影响越大;放电电流、功率及能量均随电阻R1增大而减小。

Influence factors analysis of discharge characteristics of compound intrinsically-safe circuit

Existing researches on discharge characteristics of compound intrinsically-safe circuits may be lack of mathematical analysis,or consider influence factors incompletely.For the above problems,discharge principle of compound intrinsically-safe circuit was analyzed,and mathematical models of discharge current,power and energy of the compound intrinsically-safe circuit under non oscillating state were derived.The influence of power supply voltage,inductance,capacitance,resistance and other parameters on discharge characteristics of composite intrinsically-safe circuit was simulated by Matlab software.The results show that with the increase of power supply voltage,the stable values of discharge current and power increase,and the discharge energy increases at the same time.With the increase of inductance,the blocking effect on current increases,and the discharge power and energy decrease gradually.In the initial stage,the discharge current,power and energy do not change with capacitance,and then gradually increase with the capacitance increase.The smaller the resistance R is,the greater the influence on the discharge current,power and energy is.Discharge current,power and energy decrease with the charging resistance R1 increases.