DESENVOLVIMENTO DE UMA FERRAMENTA PARA ENSAIOS DE EMI CONDUZIDA DE BAIXO CUSTO

This work present a tool of low cost for EMI Conducted tests destined to precompliance. Such tool was developed to run under a microcomputer, where the measurement instruments are simulated in accordance with the specifications of the CISPR 16-1 standard.. The operation principle of the system for EMI Conducted test, based in the CISPR 16-2 standard, with the proposed tool, consist in the acquisition and processing of an input current sample of the equipment under test using a current probe and a digital scope that has a path of data transference. The data of current sample obtained with the current probe and the oscilloscope are carried to the simulation tool. The results determined by the tool are the values of the interference in dB/μV for selected frequency band, it was validated with an Artificial Network, which construction was detailed. A proposed tool allows also to simulate the input current for the converters (Boost, Buck, Zeta, Sepic, and Buck-Boost) operating as a basic power factor pre-regulator, possibilitying to determinate the Conducted EMI before building a prototype, it contribute to reduce the time and cost of the product development, besides the didactic feature.