Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers
Thanks to a very high luminous efficacy of LED lamps (over 160 lm/W) they are the most preferred light sources in lighting applications today. The useful lifetime of LED modules exceeds 50,000 hours. Chromatic parameters of lamps making use of SSL (Solid State Lighting) have already equalled classic...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Polish Academy of Sciences
2020-08-01
|
| Series: | Bulletin of the Polish Academy of Sciences: Technical Sciences |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/117270/PDF/18_819-827_01449_Bpast.No.68-4_27.08.20.pdf |
| _version_ | 1798041031996866560 |
|---|---|
| author | J. Chęciński Z. Filus |
| author_facet | J. Chęciński Z. Filus |
| author_sort | J. Chęciński |
| collection | DOAJ |
| description | Thanks to a very high luminous efficacy of LED lamps (over 160 lm/W) they are the most preferred light sources in lighting applications today. The useful lifetime of LED modules exceeds 50,000 hours. Chromatic parameters of lamps making use of SSL (Solid State Lighting) have already equalled classic solutions, although they were noticeably worse not so long ago. High values of the Colour Rendering Index (CRI) and ease of control over the luminous flux cause that lamps with LEDs have become very attractive solutions. Today, the most important problem concerns LED drivers supplied from the 230 VAC mains. The lifetime of switched-mode converters, including electrolytic capacitors, is considerably shorter than that of LEDs. This paper discusses the features of alternative drivers for LED modules which are supplied directly from the 230 VAC mains and do not contain any electrolytic capacitors. In particular, power factor and efficiency of lamps with one or two LED strings are analysed and some hints concerning optimal design of such lamps are given. A unique feature of this work is a detailed analysis of harmonics contents in the supply current of such drivers, proving their conformity with the relevant standard. Finally, some problems associated with flicker resulting from the considered type of supply are mentioned. |
| first_indexed | 2024-04-11T22:15:49Z |
| format | Article |
| id | doaj.art-d808955986664f9da75afed210af8812 |
| institution | Directory Open Access Journal |
| issn | 2300-1917 |
| language | English |
| last_indexed | 2024-04-11T22:15:49Z |
| publishDate | 2020-08-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Bulletin of the Polish Academy of Sciences: Technical Sciences |
| spelling | doaj.art-d808955986664f9da75afed210af88122022-12-22T04:00:23ZengPolish Academy of SciencesBulletin of the Polish Academy of Sciences: Technical Sciences2300-19172020-08-0168No. 4 (i.a. Special Section on Advances in Electrical Power Engineering)819827https://doi.org/10.24425/bpasts.2020.134188Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless driversJ. ChęcińskiZ. FilusThanks to a very high luminous efficacy of LED lamps (over 160 lm/W) they are the most preferred light sources in lighting applications today. The useful lifetime of LED modules exceeds 50,000 hours. Chromatic parameters of lamps making use of SSL (Solid State Lighting) have already equalled classic solutions, although they were noticeably worse not so long ago. High values of the Colour Rendering Index (CRI) and ease of control over the luminous flux cause that lamps with LEDs have become very attractive solutions. Today, the most important problem concerns LED drivers supplied from the 230 VAC mains. The lifetime of switched-mode converters, including electrolytic capacitors, is considerably shorter than that of LEDs. This paper discusses the features of alternative drivers for LED modules which are supplied directly from the 230 VAC mains and do not contain any electrolytic capacitors. In particular, power factor and efficiency of lamps with one or two LED strings are analysed and some hints concerning optimal design of such lamps are given. A unique feature of this work is a detailed analysis of harmonics contents in the supply current of such drivers, proving their conformity with the relevant standard. Finally, some problems associated with flicker resulting from the considered type of supply are mentioned.https://journals.pan.pl/Content/117270/PDF/18_819-827_01449_Bpast.No.68-4_27.08.20.pdfsslledled-cobpwmpower factorefficiencyflickersm2082led ac direct driver |
| spellingShingle | J. Chęciński Z. Filus Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers Bulletin of the Polish Academy of Sciences: Technical Sciences ssl led led-cob pwm power factor efficiency flicker sm2082 led ac direct driver |
| title | Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers |
| title_full | Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers |
| title_fullStr | Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers |
| title_full_unstemmed | Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers |
| title_short | Analysis of supply parameters of single- and double-string LED lamps with integrated AC direct capacitorless drivers |
| title_sort | analysis of supply parameters of single and double string led lamps with integrated ac direct capacitorless drivers |
| topic | ssl led led-cob pwm power factor efficiency flicker sm2082 led ac direct driver |
| url | https://journals.pan.pl/Content/117270/PDF/18_819-827_01449_Bpast.No.68-4_27.08.20.pdf |
| work_keys_str_mv | AT jchecinski analysisofsupplyparametersofsingleanddoublestringledlampswithintegratedacdirectcapacitorlessdrivers AT zfilus analysisofsupplyparametersofsingleanddoublestringledlampswithintegratedacdirectcapacitorlessdrivers |