LED lighting equipment electromagnetic compatibility

The Electromagnetic Compatibility (EMC) means the ability of equipment to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to other equipment in that environment. There are different methods how to check if given electrical device complies with specific emission or immunity standards. This work is focused only on radiated emissions because that is one of the hardest tests to pass when we are talking about EMC. Standard EN 55015 shows limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment. In this work we tested six different LED lighting devices (from LED panels to LED light bulbs) with four radiated emission measurement methods: with log-periodic antenna in Semi-anechoic chamber (SAC) - primary method; using Coupling / Decoupling Network (CDN); with biconical antenna in Riga Technical University (RTU) hallway; with monopole antenna in enterprise SIA MassPortal custom made chamber.