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Disturbances interaction at supraharmonic range (2-150 kHz) between two lighting devices and a power source is described in this article by means of an Electrical Power method. Currents and voltages were measured from a LED lamp, a CFL device and an AC Power Source under normal operation in order to describe how conducted disturbances interact within the 2-150 kHz frequency range. From an Electrical Power point of view, the devices used are described as Power-sharing agents and therefore the disturbances observed from their operation can be exchanged not only with their electric neighbourhood, but also throughout the Frequency Domain. This method can be used for the Interaction Description in Frequency Domain of steadystate disturbances between devices without directly considering the impedance behaviour of such devices.

A set of measurements and simulations describing the relationship between conducted disturbances of a Compact Fluorescent Lamp (CFL) within the range 2-150 kHz, and some variations in its base circuit, are shown and analyzed in this article. Measurements are carried out using some low power CFL devices in single operation. Simulations of a typical CFL circuit without any Power Factor Corrector stage are performed by means of LTSpice R simulator. Measurements show a particular behavior of 2-150 kHz disturbances in current signals in CFL devices, and similarities with some disturbances from LED lamps. Variations at EMI filter, Rectifier, and Smoothing filter stages show strong influence on emissions within this frequency range. Hence, variations in base circuit allow these emissions to change when devices are in single operation. The results from measurements and simulations are a step forward in understanding and modeling emissions in the 2-150 kHz frequency range.

In this paper, an analysis of the emissions of an LED lamp is performed, when it is connected in parallel with electrical devices of linear and non-linear behavior. The objective is to determine if the presence of other loads connected in the same installation can cause a change in the emissions of the LED lamp. A measurement assembly and a test electrical network are built to perform the measurements of voltage and current emissions generated by the LED lamp between 1 Hz and 250 kHz. Incandescent, CFL and LED lamps of different power and technology are used as test loads. The analysis of results indicates that the increase of devices connected in parallel to an LED bulb can in general reduce the current THD. However, there are components in the current emission that increase their RMS value.