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Energies 2017, 10(9), 1415;

Electromagnetic Burst Measurement System Based on Low Cost UHF Dipole Antenna

Electrical Engineering Department, Faculty of Physical and Mathematical Sciences, University of Chile, Av. Tupper 2007, Santiago 8370451, Chile
Comisión Chilena de Energía Nuclear, Av. Nueva Bilbao 12.501, Las Condes, Santiago 7600713, Chile
Department of Electrical Engineering, Federico Santa Maria Technical University, Santiago 8940000, Chile
Departamento de Ciencias Físicas, Facultad de Ciencias Exactas, Universidad Andres Bello, República 220, Santiago 8370035, Chile
Author to whom correspondence should be addressed.
Received: 4 July 2017 / Revised: 7 August 2017 / Accepted: 22 August 2017 / Published: 15 September 2017
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Non-linear high-power devices produce electromagnetic noise (EMN) sources of great intensity that can disrupt and damage the surrounding electrical equipment and devices. This radiative phenomenon is very common at facilities where pulsed power generators are required, particularly those that are needed to produce dense transient plasma experiments. These conditions are found at the Chilean Nuclear Energy Commission (CCHEN), due to the presence of pulsed power generators that switch large currents (kA-MA) in short times (10–100 ns). In order to characterize and establish conditions to mitigate the effects of the EMN on nearby devices, a measurement system based on an ultra-high frequency (UHF) dipole antenna was developed. We evaluated the system measuring the EMN emanated from a plasma focus device, the PF-400J. Measurements at the place indicated broadband and intense electric fields that can couple to nearby cables and equipment (10–300 MHz bandwidth, up to 350 V/MHz spectral intensity, 100 V coupled voltage). Based on these measurements a compact and simple protection system was designed, built and tested, capable of effectively mitigating the high levels of EMN. The proper EMN impact mitigation indicates the correct operation of the suggested system. The developed system can be of interest to the energy community by facilitating EMN measurement produced by arc discharges. View Full-Text
Keywords: electromagnetic noise (EMN); dense plasma focus (DPF); dipole antenna electromagnetic noise (EMN); dense plasma focus (DPF); dipole antenna

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Escalona, I.; Avaria, G.; Díaz, M.; Ardila-Rey, J.; Moreno, J.; Pavez, C.; Soto, L. Electromagnetic Burst Measurement System Based on Low Cost UHF Dipole Antenna. Energies 2017, 10, 1415.

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