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.

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This paper presents the concept of using a two-stage power supply unit to reduce the harmonic frequencies of electric current generated by light-emitting diodes fitted with an integrated power supply and driver. In the work, there are references to the most important Standards pertaining to generation higher harmonics of current. It also provides information on the experimental setup and the measurement methodology. Subsequently, the paper discusses and analyses the research results. Finally, there are conclusions and observations on the conducted study.

Niniejsza praca dotyczy zapewnienia zasilania w energię elektryczną budynku (domku) letniskowego. Wykorzystano do tego celu odnawialne źródła energii w postaci turbiny wiatrowej oraz paneli fotowoltaicznych współpracujących z magazynem energii w celu zbilansowania produkcji oraz zapotrzebowania na energię. Na podstawie danych meteorologicznych i szacowanego profilu obciążenia wykonano symulację pracy całego układu, co pozwoliło na ocenę pracy instalacji w zakresie technicznym oraz ekonomicznym.