摘要
瞬态冲击波形发生器一般用于评价电子设备、电力设备、避雷器及非线性电阻在雷电干扰下的电磁兼容性能。通用发生电路的设计方法以理论估算为主、电脑仿真优化和经验判定为辅,它利用Laplas反变换作为理论基础,但设计方法未系统总结,电压波和电流方程的参数关系曲线选取不统一,使设计缺乏条理。为此,通过方程变换将电压、电流波形参数和电路参数的关系统一化,并利用穷举和插值法计算得出它们之间的关系曲线,从而使发生器的参数选择过程更有条理,提高了设计效率,精度也相应上升。经过Pspice软件仿真和试验测试,证实了该方法的可靠性,准确度达到了IEC标准,满足科研工作者的设计和使用要求。
A surge generator has been constructed for evaluation of the electromagnetic compatibility （EMC） of electronic and electrical devices, arresters and their non-linear resistant elements when they are subject to high-energy lightning disturbance. The circuit design of the generator is mainly based on the theoretical estimation with specific circuit, together with the experience of the researchers and the simulation of computer yet. As the most widely used method, the approach of Laplas inverse transformation, has not been particularly and systematically presented. Meanwhile, the selection of equation parameters of the current and voltage wave is not fixed. As a result, the design process seems to be complicated and deficient. In this paper, we have presented a new method of design, which is still based on the Laplas theory. However, with the equation transformation, we unified the parameters of the current and voltage waveform with the circuit parameter. Moreover, methods of exhaustion and interpolation are jointly employed in this paper to build the relationship curve of the waveform and the circuit clearly. The method can be briefly expressed as, through waveform parameters to specify a variable by the curve, through the variable to define the parameters of different circuit elements. By the simulation of the Pspice software and the experiments of several surge circuits, the method is demonstrated to be credible. In conclusion, with this method, the selection of generator parameters turns out to be more reasonable, the design efficiency increases and the accuracy is up to the IEC standard at the same time, which means the method can be applied for the researchers to use and design.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2006年第6期25-27,共3页
High Voltage Engineering
关键词
拉氏变换
冲击波形
振荡波
非振荡波
电路设计
Laplas transformation
surge waveform
oscillatory, wave
non-oscillatory wave
circuit design
