Umlawuli wamandla we-SCR, eyaziwa ngokuba ngumlawuli wamandla we-SCR kunyethyristor amandla umlawuli, sisixhobo sombane esilawula ukuphuma kwamandla kwiisekethe zombane.Isetyenziswa ngokubanzi kwimizi-mveliso eyahlukeneyo kunye nezicelo zorhwebo ezifuna ulawulo oluchanekileyo lwamandla.Kule nqaku, siza kuxubusha imigaqo ye-SCR yabalawuli bamandla.
Abalawuli bamandla be-SCRsebenza kumgaqo wolawulo lwesigaba.Isebenzisa i-thyristor (isixhobo se-semiconductor) ukulawula ubungakanani bombane ojikelezayo kwisiphaluka.I-thyristor isebenza njengotshintsho oluvula kwaye lucime ngamaxesha achanekileyo umjikelo wamandla ngamnye.Ngokulawula ubude bexesha i-thyristor ivuliwe, amandla aphumayo anokwahluka.
Ukusebenza komlawuli wamandla we-SCR kusekelwe kwiulawulo lwe-engile yokudubulaumgaqo.I-angle yokudubula i-angle apho i-thyristor iqhuba ngexesha lomjikelo wamandla ngamnye.Ngokutshintsha i-angle yokudubula, ubungakanani bamandla ahamba ngesiphaluka bunokulawulwa.I-voltage ye-output kunye yangoku inokulawulwa ngokutshintsha i-angle conduction ye-thyristor.
Abalawuli bamandla be-SCR basebenzisa inkqubo yempendulo yokugcina amandla okukhutshwa kwinqanaba eliqhubekayo.Inkqubo yempendulo ithelekisa i-voltage ephumayo okanye yangoku kunye nomqondiso wereferensi kunye nokulungelelanisa i-angle yokudubula ye-thyristors ngokufanelekileyo.Oku kuqinisekisa ukuba amandla emveliso ahlala engatshintshi nokuba umthwalo okanye igalelo lombane liyatshintsha.
Izilawuli zamandla ze-SCR zineengenelo ezininzi ngaphezu kwezinye iindidi zabalawuli bamandla.Isebenza kakuhle kwaye inokusingatha izixa ezikhulu zamandla kunye nelahleko encinci.Ikwathembekile kwaye inokusebenza kwiimeko ezinzima.Ngaphezu koko, kulula ukuyilawula kwaye inokudityaniswa kwiinkqubo ezahlukeneyo zombane.
Ukushwankathela, umgaqo wolawulo lwamandla we-SCR usekelwe kulawulo lwesigaba se-thyristor.Ngokutshintsha i-angle yokudubula ye-thyristor, amandla aphumayo anokulawulwa.Inkqubo yempendulo iqinisekisa ukuba amandla emveliso ahlala engatshintshi naphantsi kweemeko eziguqukayo.Isilungisi sombane se-SCR sisixhobo sombane esisebenzayo, esithembekileyo, nekulula ukusilawula esisetyenziswa kwiintlobo ngeentlobo zezicelo zoshishino nezorhwebo.
Ixesha lokuposa: Mar-23-2023