Effectiveness of Shielding on the Magnetic Emissions Emitted by a Toroidal Inductor
2022 2nd International Conference on Advanced Electrical Engineering (ICAEE)(2022)
摘要
In this paper, we present the effectiveness of magnetic shielding as a function of frequency and the pulse signal voltage applied to the terminals of the toroidal inductance in the near field using experimental measurements in the frequency domain by spectrum analyzer. Firstly, the magnetic field cartography of all components (H
X
, H
Y
, H
Z
) by a scan on the surface of the inductance was determined. Then the radiated emissions with and without shielding were determined. Once in varying the frequency, keeping the voltage amplitude and duty cycle constants, and in the other hand, in varying the voltage amplitude, keeping the frequency and duty cycle of pulse signal constants for two distances Z between the magnetic probe and the top of the inductor surface. The shielding material that we used is aluminum foil of diameter about 0.1 mm.
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关键词
Scan Near Field,shielding efficiency,magnetic probe,radiated emission,Frequency domain (FD)
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