Merjenje elektromagnetnega sevanja električnih aparatov in rešitev emisij na primeru

PIVEC, MATJAŽ (author), Begeš, Gaber (mentor)

Namen tega dela je predstaviti osnovne vire elektromagnetnih motenj, reševanje problema emisij in rešitev na primeru. Opisal sem tipe motenj, poti širjenja šuma in značilne načine sklapljanja motenj električnih aparatov. Povzel sem notranje vire šuma in šum aktivnih naprav. Navedel sem nekaj primerov rešitve za znižanje elektromagnetnih emisij. Opisal sem pomembnost ožičenja, uravnoteženja vezij, filtriranja linij, uporabo feritnih jeder in ščitenja vezja. Meritve aparata sem izvajal po standardu EN 55014-1 v merilnicah Slovenskega inštituta za kakovost in meroslovje (SIQ). Izvajal sem meritve prevodnih in sevalnih emisij vakuumskega sesalnika. Za rešitve na področju prevodnih emisij sem primerjal uporabo kondenzatorjev razreda x in vpliv vrednosti kapacitivnosti na merilne rezultate. Na področju sevalnih emisij pa sem emisije zniževal z uporabo feritnih jeder. Primerjal sem, kako postavitve feritov in število ovojev vpliva na merilni rezultat.

• Language: Slovenian
• Keywords: EMC, skladnost, šum, motnje, ščitenje, elektromagnetni
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2023
• PID: 20.500.12556/RUL-146296
• COBISS.SI-ID: 153193731
• Publication date in RUL: 23.05.2023

Secondary language

• Language: English
• Title: Electromagnetic radiation measurement of electrical appliances and emissions solving on the example

Abstract

The aim of this thesis was to present the basic sources of electromagnetic interference, solutions for reducing emissions and solution by an example. I have described the sources of noise and the typical ways in which interference spreads inside electrical appliances. I summarised the internal noise sources and the noise of active devices. I offered some examples of solutions to reduce electromagnetic emissions. I described the importance of wiring, balancing circuits, filtering lines, usage of ferrite cores and shielding of circuits. Measurements were carried out according to EN 55014-1, in the measuring chambers of Slovenian institute of quality and metrology (SIQ). I have measured the conductive and radiated emissions of a vacuum cleaner. For the conductive emissions, I have compared usage of different class x capacitors. For solution of radiated emissions, I compared different types of ferrite cores. Comparing how the placement of the ferrites and the number of turns on cores effect the measurement result.

• Keywords: EMC, compliance, noise, interference, shielding, electromagnetic