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Energies 2018, 11(6), 1479; https://doi.org/10.3390/en11061479

The Influence of LED Lighting Sources on the Nature of Power Factor

1
Departments of Electric Drivers and Energy Conversions, Faculty of Electrical and Control Engineering, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-288 Gdansk, Poland
2
Departments of Metrology and Optoelectronics, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology, ul. G. Narutowicza 11/12, 80-288 Gdansk, Poland
*
Author to whom correspondence should be addressed.
Received: 25 April 2018 / Revised: 2 June 2018 / Accepted: 4 June 2018 / Published: 6 June 2018
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Abstract

This article presents measurements of electric power absorbed by a newly built facility for office and scientific research activities. These measurements highlighted the need for compensation of capacitive reactive power—not predicted by the designer—due to the vast use of LED lighting in the facility. The article also describes a reactive power compensation system, designed on the basis of the above-mentioned measurements, and the introduced control and measurement system that enables on-site monitoring and online analysis of consumed energy and power. The research was carried out using popular LED lighting sources available on the local market (Poland). Basic electrical parameters of the locally available LEDs were measured as a function of the changes in harmonic levels occurring in the supply voltage. The test illustrated that samples were characterized by a very low power factor, which decreased as the level of harmonic disturbances increased. On the basis of the measurements, the authors suggest that obligatory requirements should be introduced in regard to the minimum power factor at the level of 0.9 for popular LED lighting sources (below 25 W). View Full-Text
Keywords: LED; power supply networks; reactive power compensation; thermographic LED; power supply networks; reactive power compensation; thermographic
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wlas, M.; Galla, S. The Influence of LED Lighting Sources on the Nature of Power Factor. Energies 2018, 11, 1479.

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