Isiphaluka esiphambili se-soft starter isebenzisa i-thyristor.Ngokutshintsha ngokuthe ngcembe i-angle yokuvula i-thyristor, i-voltage iphakanyisiwe ukugqiba inkqubo yokuqala.Lo ngumgaqo osisiseko wesiqalo esithambileyo.Kwimarike ye-low-voltage soft starter, zininzi iimveliso, kodwaisiqalo esithambileyo esiphakathi kwamandla ombaneiimveliso zisembalwa ngokwentelekiso.
Umgaqo osisiseko we-medium-voltage soft starter uyafana nalowo we-low-voltage soft starter, kodwa kukho lo mahluko ulandelayo phakathi kwawo: (1) I-Medium-voltage soft starter isebenza kwindawo ene-voltage ephezulu, ukusebenza kokufakelwa kwezinto ezahlukeneyo. amacandelo ombane ngcono, kunye nesakhono anti-ukuphazamiseka chip electronic yomelele.Xa iisiqalo esithambileyo esiphakathi kwamandla ombaneyenziwe kwikhabhathi yombane, uyilo lwamacandelo ombane kunye noqhagamshelo kunye ne-medium-voltage soft starter kunye nezinye izixhobo zombane nazo zibaluleke kakhulu.2Ke ngoko, undoqo wolawulo ngokuqhelekileyo usebenzisa i-chip ye-DSP ephezulu, endaweni ye-low-voltage soft starter ye-MCU engundoqo.Isekethe ephambili ye-voltage ephantsi ye-soft starter yenziwe ngama-thyristors amathathu ahambelanayo.Nangona kunjalo, kwi-high-pressure soft starter, i-thyristors ephezulu ye-voltage kwi-series isetyenziselwa ulwahlulo lwe-voltage ngenxa yokunganyangeki kwe-voltage ye-thyristor eyodwa ephezulu-voltage.Kodwa iiparamitha zokusebenza ze-thyristor nganye azihambelani ngokupheleleyo.Ukungahambelani kweeparamitha ze-thyristor kuya kukhokelela ekungahambelani kwexesha lokuvula i-thyristor, okuya kubangela umonakalo we-thyristor.Ngoko ke, ekukhethweni kwe-thyristors, i-parameters ye-thyristor yesigaba ngasinye kufuneka ihambelane ngokusemandleni, kwaye iiparitha zecandelo le-RC filter circuit yesigaba ngasinye kufuneka zihambelane ngokusemandleni.(3) Indawo yokusebenza ye-medium-voltage soft starter ithanda ukuphazanyiswa ngeendlela ezahlukeneyo ze-electromagnetic, ngoko ke ukuhanjiswa komqondiso we-trigger kukhuselekile kwaye kuthembekile.
Kwisixhobo sokuqalisa esithambileyo esiphakathi, isiginali ye-trigger iqhele ukuhanjiswa yifiber ebonakalayo, enokuthintela ngokufanelekileyo uphazamiseko olwahlukeneyo lwe-electromagnetic.Kukho iindlela ezimbini zokuhambisa imiqondiso nge-fiber optical: enye ine-multi-fiber, kwaye enye i-single-fiber.Kwimodi ye-multi-fiber, ibhodi nganye ye-trigger inefiber enye ye-optical.Kwimowudi ye-fiber enye, kukho ifayibha enye kuphela kwisigaba ngasinye, kwaye umqondiso udluliselwa kwibhodi enye ye-trigger ephambili, kwaye emva koko idluliselwe kwezinye iibhodi ze-trigger kwisigaba esifanayo yibhodi yokuqalisa.Ekubeni ukulahleka kwe-photoelectric transmission ye-fiber optical nganye ayihambelani, i-fiber optical eyodwa inokwethenjelwa ngakumbi kune-multi-optical fiber ukusuka kumbono we-trigger consistency.(4) Isiqalisi esithambileyo esiphakathi sevoltage sineemfuno eziphezulu zokubona umqondiso kunesokuqala esithambileyo esinombane ophantsi.Kukho uphazamiseko oluninzi lwe-electromagnetic kwindawo apho i-medium-voltage soft starter ikhona, kunye ne-vacuum contactor kunye ne-vacuum circuit breaker esetyenziswaisiqalo esithambileyo esiphakathi kwamandla ombaneiya kuvelisa uphazamiseko oluninzi lwe-electromagnetic kwinkqubo yokwaphuka kunye nokuvala.Ngoko ke, isignali efunyenweyo ayifanele ihluzwe kuphela nge-hardware, kodwa kunye nesofthiwe yokususa uphawu lokuphazamiseka.(5) Emva kokuba umqalisi othambileyo egqibe inkqubo yokuqalisa, kufuneka atshintshele kwindawo ebalekayo.Indlela yokutshintshela ngokutyibilikayo kwi-bypass ebalekayo iphinda ibenzima kumqalisi othambileyo.Indlela yokukhetha indawo yokudlula ibaluleke kakhulu.Indawo yokudlula kwangethuba, umothuko wangoku womelele kakhulu, naphantsi kweemeko zombane ophantsi, uya kubangela unikezelo lwamandla ombane wesigaba esithathu uhambo, okanye bonakalise i-breaker circuit.Umonakalo mkhulu phantsi kweemeko zoxinzelelo oluphezulu.I-bypass point isemva kwexesha, kunye ne-motor jitter kakubi, echaphazela ukusebenza okuqhelekileyo komthwalo.Ke ngoko, i-bypass signal ye-hardware yesekethe yobhaqo kakhulu, kwaye inkqubo yokuqhubekeka kufuneka ilungile.
Ixesha lokuposa: Jun-05-2023