Study on Measurement Method of Electromagnetic Interference from Large-scale Electric Equipment/System

摘要

This paper proposed a radiated disturbances measurement method below 30 MHz for a large-scale system which consists of multiple devices. In the proposed method, a large-scale system as equipment under test was assumed to be an assembly of small equipment. The proposed method was evaluated the validity with investigation of the correlation between conducted and radiated disturbances of a large-scale system. For the investigation, the magnetic fields strength and common-mode current as conducted disturbance were measured. As a result, validity of the proposed measurement method was confirmed.