Isifunda esiyinhloko sesiqalisi esithambile sisebenzisa i-thyristor.Ngokushintsha kancane kancane i-angle yokuvula ye-thyristor, i-voltage iphakanyiswa ukuqedela inqubo yokuqala.Lesi yisimiso esiyisisekelo sesiqalisi esithambile.Emakethe ye-low-voltage soft starter, kunemikhiqizo eminingi, kodwaisiqalo esithambile esiphakathi kwe-voltageimikhiqizo isembalwa uma kuqhathaniswa.
Isimiso esiyisisekelo se-medium-voltage soft starter siyefana nesokuqala esithambile esine-voltage ephansi, kodwa kunomehluko olandelayo phakathi kwakho: (1) Isiqalisi esithambile esine-Medium-voltage esithambile sisebenza endaweni ene-voltage ephezulu, ukusebenza kwe-insulation kwezinhlobonhlobo ezihlukahlukene. izingxenye zikagesi zingcono, futhi ikhono lokulwa nokuphazamiseka kwe-chip electronic linamandla.Lapho i-isiqalo esithambile esiphakathi kwe-voltagekwakheka iKhabhinethi kagesi, ukwakheka kwezingxenye zikagesi kanye nokuxhunywa nesiqalisi esithambile esiphakathi-voltage nezinye izinto zikagesi nakho kubaluleke kakhulu.(2) Isiqalisi esithambile sikagesi ophakathi nendawo sinomongo wokulawula ukusebenza okuphezulu, ongacubungula isignali ngesikhathi futhi ngokushesha.Ngakho-ke, indikimba yokulawula ngokuvamile isebenzisa i-chip ye-DSP esebenza kahle kakhulu, kunesiqalisi esithambile esine-voltage ephansi somongo we-MCU.Isifunda esiyinhloko se-low voltage soft starter sakhiwe ama-thyristors amathathu aphambene.Kodwa-ke, ku-high-pressure soft starter, ama-thyristors amaningi aphezulu-voltage ochungechungeni asetshenziselwa ukuhlukaniswa kwe-voltage ngenxa yokumelana ne-voltage enganele ye-thyristor eyodwa ye-voltage ephezulu.Kodwa imingcele yokusebenza ye-thyristor ngayinye ayihambisani ngokuphelele.Ukungahambisani nemingcele ye-thyristor kuzoholela ekungahambisani nesikhathi sokuvula i-thyristor, okuzoholela ekulimaleni kwe-thyristor.Ngakho-ke, ekukhethweni kwe-thyristors, imingcele ye-thyristor yesigaba ngasinye kufanele ihambisane ngangokunokwenzeka, futhi imingcele yengxenye ye-RC filter circuit yesigaba ngasinye kufanele ihambisane ngangokunokwenzeka.(3) Indawo yokusebenza ye-medium-voltage soft starter ijwayele ukuphazamiseka okuhlukahlukene kozibuthe, ngakho-ke ukudluliswa kwesiginali ye-trigger kuphephile futhi kuthembekile.
Kusiqalisi esithambile esine-voltage emaphakathi, isignali ye-trigger ivamise ukudluliselwa nge-optical fiber, engagwema ngempumelelo ukuphazamiseka okuhlukahlukene kozibuthe.Kunezindlela ezimbili zokudlulisa amasignali nge-optical fibers: eyodwa ine-multi-fiber, kanti enye i-single-fiber.Kumodi ye-multi-fiber, i-trigger board ngayinye ine-fiber optical eyodwa.Kumodi ye-fiber eyodwa, kune-fiber eyodwa kuphela esigabeni ngasinye, futhi isignali idluliselwa ebhodini elilodwa le-trigger eyinhloko, bese idluliselwa kwamanye amabhodi okuqalisa esigabeni esifanayo ngebhodi le-trigger eyinhloko.Njengoba ukulahlekelwa kokudluliswa kwe-photoelectric kwe-fiber optical ngayinye akuhambisani, i-fiber optical eyodwa inokwethenjelwa kakhulu kune-multi-optical fiber ngokombono we-trigger consistency.(4) Isiqalisi esithambile esine-voltage emaphakathi sinezidingo eziphakeme zokutholwa kwesiginali kunesiqalisi esithambile esine-voltage ephansi.Kunokuphazamiseka okuningi kozibuthe endaweni lapho kutholakala khona isiqalisi esithambile se-medium-voltage, kanye ne-vacuum contactor kanye ne-vacuum circuit breaker esetshenziswaisiqalo esithambile esiphakathi kwe-voltageizokhiqiza ukuphazamiseka okuningi kwe-electromagnetic ohlelweni lokuphuka nokuvala.Ngakho-ke, isignali etholiwe akufanele ihlungwe nge-hardware kuphela, kodwa futhi nesofthiwe ukususa isignali yokuphazamiseka.(5) Ngemuva kokuthi isiqalisi esithambile siqedele inqubo yokuqalisa, sidinga ukushintshela kusimo sokusebenza se-bypass.Indlela yokushintshela ngokushelelayo esimweni sokugijima se-bypass nakho kunzima kumqalisi othambile.Indlela yokukhetha indawo yokudlula ibaluleke kakhulu.Iphuzu lokuqala lokudlula, ukushaqeka kwamanje kunamandla kakhulu, ngisho nangaphansi kwezimo zamandla kagesi aphansi, kuzobangela uhambo lwesigaba sesithathu sokuphakelwa kwamandla kwesiphakeli, noma kulimaze isinqamuli sesifunda.Umonakalo mkhulu ngaphansi kwezimo zengcindezi ephezulu.Iphoyinti lokudlula liphuzile, futhi i-motor jitter kabi, ethinta ukusebenza okuvamile komthwalo.Ngakho-ke, isifunda sokutholwa kwehadiwe yesiginali ye-bypass sikhulu kakhulu, futhi ukucutshungulwa kohlelo kufanele kube okulungile.
Isikhathi sokuthumela: Jun-05-2023