| Issue |
E3S Web Conf.
Volume 185, 2020
2020 International Conference on Energy, Environment and Bioengineering (ICEEB 2020)
|
|
|---|---|---|
| Article Number | 01081 | |
| Number of page(s) | 4 | |
| Section | Energy Engineering and Power System | |
| DOI | https://doi.org/10.1051/e3sconf/202018501081 | |
| Published online | 01 September 2020 | |
Experimental results on pulse magnetic field coupling into PCB and its suppression with shielding box
1 State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute co., Ltd, Beijing, 102209, China
2 State Key Laboratory of Alternate Electric Power System with Renewable Energy Sources, North China Electric Power University, Beijing, 102206, China
* Corresponding author: litianle201178@163.com
Due to the periodic switching operation of IGBT, there is a complex and high-intensity electromagnetic environment around the flexible DC converter valve. During this process, strong transit magnetic field caused by the turning on and off of large current can produce induced voltage on the nearby PCBs and even may affect the normal function of the PCBs. In this paper, the induced voltage in the output port on a PCB caused by a pulsed magnetic field is measured in laboratory. The effectiveness of a shielding box on suppressing the induced voltage and the magnetic field is also investigated experimentally. The results show that the induced voltage is about 12mV (in peak to peak value) for a 1.5kA/m, 6.4μs pulse magnetic field, and the shielding box has about 50dB time-domain shielding effectiveness.
© The Authors, published by EDP Sciences, 2020
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