一种浪涌抑制电路过程分析与验证

Analysis and Verification of a Surge Suppression Circuit

浪涌抑制电路对于电子设备安全具有十分重要的作用,而浪涌抑制电路的结构和参数对于电流抑制效果又具有重要影响,为提高浪涌抑制效果,有效降低浪涌电流,首先分析了一种浪涌抑制电路的工作原理,详细介绍了基于该原理的正端浪涌抑制电路和负端浪涌抑制电路的区别,然后按照时间顺序对该类型浪涌抑制电路的上电过程的4个阶段分别进行了建模分析、参数讨论以及实际验证,给出了电路设计参数的选取方法和建议范围,并给出了浪涌电流对供配电系统的影响;通过仿真和实际试验对浪涌抑制电路的参数效果进行了验证,仿真和验证结果为电路参数选取提供了设计依据,并证明了浪涌抑制电路前端导线引起的感生电压对供配电系统无影响。

Surge suppression circuit plays a very important role in the safety of electronic equipment, while the structure and parameters of surge suppression circuit have important influence on the current suppression effect. In order to improve the surge suppression effect and reduced the surge current effectively, the operation principle of a surge suppression circuit is analyzed. Based on the principle of the surge suppression, the difference between positive and negative surge suppression circuit is introduced in detail. According to the time sequence, the four stages of circuit power on process are discussed, which includes the modeling and analysis, the parameter discussion and the actual verification. The selection method and the recommended range of circuit design parameters are shown. The effect of surge current on the power supply side is discussed in the end. The effect of surge suppression circuit is verified by simulation and practical test. Simulation and verification provide the design basis of selecting the circuit parameters, and prove that induced voltage caused by wire in front of the surge suppression circuit has no effect on the power supply and distribution system.