Abstract
The paper deals with electromagnetic disturbances in the form of current higher harmonics, which are generated by LED lighting elements. It presents the problems related to the formation and impact of higher harmonics in the electrical systems of commercial facilities. The results of tests and analyses of current distortions for two different LED lamps are included, and these are in reference to the parameters set out in the normal applicable standards. A system was then proposed to improve the quality of energy in the mains of commercial facilities in the form of a two-stage power supply. Tests of the systems with the aforementioned LED lamps were conducted and commented upon after introduction of the two-stage power supply. The final part of the paper contains a summary of the obtained test results.
Highlights
Electrical and electronic devices used and manufactured nowadays are very often technically advanced
The quality of the energy in power mains and the limitation of the impacts of electromagnetic interference as well as proper energy management are absolutely vital in the functioning of all facilities that supply, process, and use electricity
Based on the conducted measurements and considerations, as well as analyses presented by authors in other publications [20,21,22,23,28,29,30], it is possible to conclude, unambiguously, that the electrical lighting systems that use lamps operating with light-emitting diodes (LED) technology, introduce strong distortions of the drawn current, and at the same time, they put a strain on power supply systems with reactive capacitive power
Summary
Electrical and electronic devices used and manufactured nowadays are very often technically advanced. In commercial and industrial buildings as well as in residential buildings (in private life, e.g., houses or apartments), in order to ensure the appropriate working, living, and rest conditions for humans, and for the purpose of making different facilities visible or exposed, lighting systems where different artificial light sources are used are commonly applied. In view of their very low luminous efficiency, the use of traditional bulbs has been abandoned almost completely. The results of the measurements will be presented after introducing such a system into installations using the previously tested lighting elements
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