{"id":"https://openalex.org/W1967315366","doi":"https://doi.org/10.1109/iecon.2011.6119614","title":"Comparative analysis of power LEDs dimming methods","display_name":"Comparative analysis of power LEDs dimming methods","publication_year":2011,"publication_date":"2011-11-01","ids":{"openalex":"https://openalex.org/W1967315366","doi":"https://doi.org/10.1109/iecon.2011.6119614","mag":"1967315366"},"language":"en","primary_location":{"id":"doi:10.1109/iecon.2011.6119614","doi":"https://doi.org/10.1109/iecon.2011.6119614","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iecon.2011.6119614","pdf_url":null,"source":{"id":"https://openalex.org/S4210172894","display_name":"Annual Conference of the IEEE Industrial Electronics Society (IECON)","issn_l":"1553-572X","issn":["1553-572X","2577-1647"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["jufo-1","norway-1"],"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","raw_type":"proceedings-article"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5044602163","display_name":"Welbert Alves Rodrigues","orcid":"https://orcid.org/0000-0001-5237-8898","observed_orcids":["https://orcid.org/0000-0001-5237-8898"]},"institutions":[{"id":"https://openalex.org/I110200422","display_name":"Universidade Federal de Minas Gerais","ror":"https://ror.org/0176yjw32","country_code":"BR","type":"education","lineage":["https://openalex.org/I110200422"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"W.A. Rodrigues","raw_affiliation_strings":["Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","institution_ids":["https://openalex.org/I110200422"]},{"raw_affiliation_string":"Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL","institution_ids":["https://openalex.org/I110200422"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091250431","display_name":"Lenin Martins Ferreira Morais","orcid":"https://orcid.org/0000-0003-1680-0400","observed_orcids":["https://orcid.org/0000-0003-1680-0400"]},"institutions":[{"id":"https://openalex.org/I110200422","display_name":"Universidade Federal de Minas Gerais","ror":"https://ror.org/0176yjw32","country_code":"BR","type":"education","lineage":["https://openalex.org/I110200422"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"L.M.F. Morais","raw_affiliation_strings":["Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","institution_ids":["https://openalex.org/I110200422"]},{"raw_affiliation_string":"Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL","institution_ids":["https://openalex.org/I110200422"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108398348","display_name":"Pedro F. Donoso-Garcia","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I110200422","display_name":"Universidade Federal de Minas Gerais","ror":"https://ror.org/0176yjw32","country_code":"BR","type":"education","lineage":["https://openalex.org/I110200422"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"P.F. Donoso-Garcia","raw_affiliation_strings":["Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","institution_ids":["https://openalex.org/I110200422"]},{"raw_affiliation_string":"Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL","institution_ids":["https://openalex.org/I110200422"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086640002","display_name":"Porf\u00edrio Cabaleiro Cortizo","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I110200422","display_name":"Universidade Federal de Minas Gerais","ror":"https://ror.org/0176yjw32","country_code":"BR","type":"education","lineage":["https://openalex.org/I110200422"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"P.C. Cortizo","raw_affiliation_strings":["Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BRAZIL","institution_ids":["https://openalex.org/I110200422"]},{"raw_affiliation_string":"Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL","institution_ids":["https://openalex.org/I110200422"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5050150135","display_name":"Seleme Isaac Seleme","orcid":"https://orcid.org/0000-0001-8541-8737","observed_orcids":["https://orcid.org/0000-0001-8541-8737"]},"institutions":[{"id":"https://openalex.org/I110200422","display_name":"Universidade Federal de Minas Gerais","ror":"https://ror.org/0176yjw32","country_code":"BR","type":"education","lineage":["https://openalex.org/I110200422"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"S.I. Seleme","raw_affiliation_strings":["Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR","Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR","institution_ids":["https://openalex.org/I110200422"]},{"raw_affiliation_string":"Universidade Federal de Minas Gerais, Department of Electronic Engineering, Belo Horizonte, BRAZIL","institution_ids":["https://openalex.org/I110200422"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I110200422"],"apc_list":null,"apc_paid":null,"fwci":4.6685,"has_fulltext":false,"cited_by_count":24,"citation_normalized_percentile":{"value":0.95689481,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"2907","last_page":"2912"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10175","display_name":"Advanced DC-DC Converters","score":0.9419000148773193,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10175","display_name":"Advanced DC-DC Converters","score":0.9419000148773193,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10099","display_name":"GaN-based semiconductor devices and materials","score":0.0203000009059906,"subfield":{"id":"https://openalex.org/subfields/3104","display_name":"Condensed Matter Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13093","display_name":"Electric Power Systems and Control","score":0.005400000140070915,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/power-leds","display_name":"power LEDs","score":0.9480000138282776},{"id":"https://openalex.org/keywords/led-dimming","display_name":"LED dimming","score":0.996999979019165},{"id":"https://openalex.org/keywords/current-source","display_name":"current source","score":0.7179999947547913},{"id":"https://openalex.org/keywords/pulse-width-modulation","display_name":"pulse width modulation","score":0.9620000123977661},{"id":"https://openalex.org/keywords/current-control-loop","display_name":"current loop control","score":0.6399999856948853},{"id":"https://openalex.org/keywords/constant-current-regulation","display_name":"constant current regulation","score":0.6690000295639038},{"id":"https://openalex.org/keywords/luminous-intensity","display_name":"luminous intensity","score":0.6710000038146973},{"id":"https://openalex.org/keywords/led-lighting","display_name":"LED lighting","score":0.7129999995231628}],"concepts":[{"id":"https://openalex.org/C176666156","wikidata":"https://www.wikidata.org/wiki/Q25504","display_name":"Light-emitting diode","level":2,"score":0.9228765964508057},{"id":"https://openalex.org/C110113834","wikidata":"https://www.wikidata.org/wiki/Q107780","display_name":"Luminous flux","level":3,"score":0.7799732685089111},{"id":"https://openalex.org/C173886181","wikidata":"https://www.wikidata.org/wiki/Q47616","display_name":"Incandescent light bulb","level":2,"score":0.7736034393310547},{"id":"https://openalex.org/C133321666","wikidata":"https://www.wikidata.org/wiki/Q3238394","display_name":"LED circuit","level":4,"score":0.6557333469390869},{"id":"https://openalex.org/C101271287","wikidata":"https://www.wikidata.org/wiki/Q1553201","display_name":"LED lamp","level":2,"score":0.6399602293968201},{"id":"https://openalex.org/C74389443","wikidata":"https://www.wikidata.org/wiki/Q104831","display_name":"Luminous intensity","level":2,"score":0.5845556259155273},{"id":"https://openalex.org/C148043351","wikidata":"https://www.wikidata.org/wiki/Q4456944","display_name":"Current (fluid)","level":2,"score":0.5754773616790771},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.5397881269454956},{"id":"https://openalex.org/C51858381","wikidata":"https://www.wikidata.org/wiki/Q1504173","display_name":"Luminous efficacy","level":3,"score":0.5396674871444702},{"id":"https://openalex.org/C78434282","wikidata":"https://www.wikidata.org/wiki/Q11656","display_name":"Diode","level":2,"score":0.5197051167488098},{"id":"https://openalex.org/C92746544","wikidata":"https://www.wikidata.org/wiki/Q585184","display_name":"Pulse-width modulation","level":3,"score":0.4905518889427185},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.46955209970474243},{"id":"https://openalex.org/C53392680","wikidata":"https://www.wikidata.org/wiki/Q5163647","display_name":"Constant current","level":3,"score":0.4516427516937256},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.38111361861228943},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.35691037774086},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.30337071418762207},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.2415662705898285},{"id":"https://openalex.org/C2982854487","wikidata":"https://www.wikidata.org/wiki/Q9128","display_name":"Light source","level":2,"score":0.22720718383789062},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.19241425395011902},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.14687323570251465},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C2779227376","wikidata":"https://www.wikidata.org/wiki/Q6505497","display_name":"Layer (electronics)","level":2,"score":0.0},{"id":"https://openalex.org/C68583231","wikidata":"https://www.wikidata.org/wiki/Q206907","display_name":"Short circuit","level":3,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iecon.2011.6119614","doi":"https://doi.org/10.1109/iecon.2011.6119614","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iecon.2011.6119614","pdf_url":null,"source":{"id":"https://openalex.org/S4210172894","display_name":"Annual Conference of the IEEE Industrial Electronics Society (IECON)","issn_l":"1553-572X","issn":["1553-572X","2577-1647"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["jufo-1","norway-1"],"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320322025","display_name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","ror":"https://ror.org/03swz6y49"},{"id":"https://openalex.org/F4320322980","display_name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de Minas Gerais","ror":"https://ror.org/00nc55f03"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W1535619163","https://openalex.org/W1589194756","https://openalex.org/W2152500329","https://openalex.org/W2159336493","https://openalex.org/W2159469721","https://openalex.org/W2160068585","https://openalex.org/W2786539216","https://openalex.org/W2792026673","https://openalex.org/W4302061079"],"related_works":["https://openalex.org/W2109502161","https://openalex.org/W2104588710","https://openalex.org/W2125089839","https://openalex.org/W2107780820","https://openalex.org/W4256329158","https://openalex.org/W2367988914","https://openalex.org/W7216783942","https://openalex.org/W3209205139","https://openalex.org/W2545337656","https://openalex.org/W2085687802"],"abstract_inverted_index":{"Light":[0],"emitting":[1],"diodes":[2],"(LEDs)":[3],"have":[4,34,81],"many":[5],"features":[6,18],"that":[7,19,131],"make":[8],"them":[9,137],"very":[10],"attractive":[11],"for":[12,59],"use":[13],"in":[14,125],"lighting.":[15],"The":[16],"main":[17],"stand":[20],"out":[21],"is":[22,68,119],"its":[23],"small":[24],"size":[25],"compared":[26],"to":[27,43,49,71,112,121],"incandescent":[28],"and":[29,40,45,97,107],"fluorescent":[30],"lamps.":[31],"Also,":[32],"they":[33],"high":[35],"luminous":[36,64,133],"efficiency,":[37],"long":[38],"lifetime":[39],"are":[41,91,104],"resistant":[42],"shocks":[44],"vibrations,":[46],"which":[47],"contributes":[48],"increasing":[50],"their":[51],"reliability.":[52],"This":[53],"paper":[54],"presents":[55],"a":[56],"current":[57,74,84,96,110,115,124],"source":[58,79],"Power":[60],"LEDs.":[61],"As":[62],"the":[63,72,114,117,123,126,132],"intensity":[65],"of":[66,83,88,95],"LEDs":[67,90,118,127],"directly":[69],"related":[70],"direct":[73],"flowing":[75],"through":[76,116],"them,":[77],"this":[78],"must":[80],"characteristics":[82],"source.":[85],"Two":[86],"methods":[87,103],"dimming":[89],"analyzed:":[92],"continuous":[93],"variation":[94],"pulse":[98],"width":[99],"modulation":[100],"(PWM).":[101],"These":[102],"implemented,":[105],"tested":[106],"compared.":[108],"A":[109],"loop":[111],"control":[113],"designed":[120],"keep":[122],"always":[128],"constant,":[129],"so":[130],"flux":[134],"emitted":[135],"by":[136],"does":[138],"not":[139],"change.":[140]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2022,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":3},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":3}],"updated_date":"2026-10-26T11:51:55.731654","created_date":"2016-06-24T00:00:00"}