一个可充气的大规模过渡电磁干扰测试系统,基于低频补偿天线
Yi Zhou1, Yan-Zhao Xie1, Ning Dong1
1State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
The Review of scientific instruments
|December 1, 2025
概括
本研究介绍了大型设备的充气过时电磁干扰 (TED) 测试系统. 便携式系统可以在现场进行辐射测试,克服大型物品的后勤挑战.
科学领域:
- 电磁兼容 (EMC) 工程 电磁兼容 (EMC) 工程
- 天线理论和设计.
- 脉冲动力系统 脉冲动力系统
背景情况:
- 对正在测试的大型设备 (EUT) 的现场短暂电磁干扰 (TED) 辐射测试带来了重大后勤挑战.
- 现有的测试方法通常需要将大型EUT运送到专门设施,增加成本和复杂性.
- 需要移动和适应性的解决方案来准确地测试大型基础设施的TED测试.
研究的目的:
- 开发和验证可充气过时电磁干扰 (TED) 测试系统,用于现场评估正在测试的大型设备 (EUT).
- 通过理论建模和优化,提高横向电磁喇天线的低频辐射性能.
- 为了创建一个便携式和可折叠的系统,能够产生高强度的电磁场,用于现实的测试场景.
主要方法:
- 一个低频补偿横向电磁喇天线与背负匹配阻抗理论上是模拟的.
- 为了指导天线设计,我们得出了电磁双极时刻的分析表达式.
- 一个电线网TED模拟器使用参数研究进行了优化,考虑了诸如弧度过渡,地面层,网格布局和电线松等因素.
- 一个充气式支结构和一个600千伏脉冲发生器被整合到测试系统中.
主要成果:
- 拟议的天线设计提高了低频辐射的性能.
- 优化的电线网TED模拟器实现了10 × 8 × 7 m3的测试体积.
- 集成系统提供了4 × 4 × 4 m3的测试体积,电场超过50 kV/m (2.54 ns升高时间,23.6 ns脉冲宽度).
- 可折叠的充气设计允许整个系统 (11 × 12 × 9 m3) 进行压缩以供运输.
结论:
- 充气TED测试系统有效地解决了大型EUTs现场测试的挑战.
- 该系统的便携性和可折叠性使得设备的现场测试,如高压电力变压器,无需搬迁.
- 开发的天线和模拟器设计有助于电磁兼容性测试方法的进步.
相关概念视频
01:10Generating Electromagnetic Radiations
6.7K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
6.7K
01:30Electromagnetic Fields
2.7K
Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
However, the observation of...
However, the observation of...
2.7K
01:17Magnetic Damping
995
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
995