Low-Cost Extra-Low Voltage LED Dimmer for Tuneable White Lighting
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F19%3A10242709" target="_blank" >RIV/61989100:27240/19:10242709 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27730/19:10242709
Result on the web
<a href="http://eejournal.ktu.lt/index.php/elt/article/view/23675" target="_blank" >http://eejournal.ktu.lt/index.php/elt/article/view/23675</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5755/j01.eie.25.3.23675" target="_blank" >10.5755/j01.eie.25.3.23675</a>
Alternative languages
Result language
angličtina
Original language name
Low-Cost Extra-Low Voltage LED Dimmer for Tuneable White Lighting
Original language description
The colour appearance of light sources has a major impact on how people perceive space. With LED illumination lighting, the colour output can be tuned to virtually any perceivable colour, including any hue of white light. It has been established that the right shade of white light during the 24-hour day cycle has a positive effect on the human body's biological system. For this reason, it is very important to focus on the development and application of new lighting systems that have dynamically variable light outputs in order to imitate the sunlight. Circadian regulation is most responsive to short-wavelength light (460 nm = blue colour). This paper describes the development of a low-cost extra-low voltage LED dimmer for tunable white lighting systems aiming to achieve maximum electrical performance and light-output. This dimming module has two independent LED control channels and allows for a variable colour temperature control from warm white to cold white light. Experimental results of the dimming module efficiency measurements, correlated colour temperature (CCT), colour rendering index (CRI), illuminance and power consumption of the luminaire depending on the duty cycle for different control frequencies (200 Hz, 1.5 kHz, 5 kHz, 10 kHz and 20 kHz) are presented. The paper further describes the principle of creating control curves for an independent regulation of correlated colour temperature and illuminance. In the form of a table, the control curve outputs may be uploaded into a microcontroller. The paper details the construction, function and the advantages of this LED dimmer prototype.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Elektronika ir elektrotechnika
ISSN
1392-1215
e-ISSN
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Volume of the periodical
25
Issue of the periodical within the volume
3
Country of publishing house
LT - LITHUANIA
Number of pages
7
Pages from-to
43-49
UT code for WoS article
000473125300007
EID of the result in the Scopus database
2-s2.0-85069602937