摘要
对于本质安全电感电路而言,开路电弧放电数学模型的放电时间是完整的放电时间T。随着现代防爆技术安全性及电源功率的要求不断提高,DART(Dynamic Arc Recognition and Ternimation)技术的出现,其原有的电弧放电过程被截止,放电时间减小为△t<T,电弧放电能量随之减小。在自然放电过程放电电流线性衰减模型的基础上,建立了非自然电弧放电的能量计算公式,并分析两部分能量组成之间的关系,以得到更加普适的电弧放电数学模型。最后对于含开关变换器的电感电路进行了仿真分析。
For intrinsically safe inductive circuits,the mathematical model of open circuit arc discharge time is the complete discharge time T.With the improvement of safety and power requirements of modern explosion proof technology and the emergence of DART(Dynamic Arc Recognition and Terminology),the original arc discharge process is cut off,the discharge time is reduced(△t<T),and the arc discharge energy is reduced.Based on the linear attenuation model of discharge current in natural discharge process,the energy calculation formula of unnatural arc discharge is established,and the relationship between the two energy components is analyzed to obtain a more universal mathematical model of arc discharge.The simulation analysis of inductance circuit with switch converter is carried out.
作者
孟庆海
文晶
Meng Qing-hai;Wen Jing(School of Electrical and Control Engineering,North China University of Technology,Beijing 100144)
出处
《电气防爆》
2020年第3期1-5,共5页
Electric Explosion Protection
