1. Ibangela ukushintshashintsha kwamandla kagesi kugridi yamandla, okuthinta ukusebenza kwezinye izinto zokusebenza kugridi yamandla
Lapho injini ye-AC iqalwa ngokuqondile ku-voltage egcwele, amandla okuqala azofinyelela izikhathi ezi-4 kuya kweziyi-7 kunamanje akaliwe.Lapho umthamo we-motor mkhulu kakhulu, isiqalo samanje sizobangela ukwehla okubukhali ku-voltage yegridi, okuthinta ukusebenza okuvamile kwezinye izinto zokusebenza kugridi.
Ngesikhathi sokuqalisa okuthambile, amandla okuqala ngokuvamile izikhathi ezingu-2-3 zesilinganiso samanje, futhi ukushintshashintsha kwamandla kagesi wegridi ngokuvamile kungaphansi kuka-10%, okunomthelela omncane kakhulu kwezinye izinto zokusebenza.
⒉ Umthelela kugridi yamandla
Umthelela kugridi yamandla ubonakala ngokuyinhloko ezicini ezimbili:
① Umthelela wamanje omkhulu oqalwe ngokuqondile injini enkulu kakhulu kugridi yamandla ucishe ufane nomthelela wesigaba esifushane sesigaba sesithathu kugridi yamandla, okuvamise ukubangela ukuzungeza kwamandla futhi kwenza igridi yamandla ilahlekelwe ukuzinza.
② Ukuqala kwamanje kuqukethe inani elikhulu lama-harmonics wokuhleleka okuphezulu, okuzobangela ukuzwakala kwefrikhwensi ephezulu namapharamitha wesekethe yegridi, okuholela ekusetshenzisweni kabi kokuvikela ukudluliselwa, ukwehluleka kokulawula okuzenzakalelayo namanye amaphutha.
Ngesikhathi sokuqala okuthambile, i-current yokuqala iyancipha kakhulu, futhi imiphumela engenhla ingaqedwa ngokuphelele.
Ukulimala kwe-motor insulation, nciphisa impilo yemoto
① Ukushisa kwe-Joule okukhiqizwa amandla amakhulu asebenza ngokuphindaphindiwe ekuxhumeni kwangaphandle kwentambo, okusheshisa ukuguga kwe-insulation futhi kunciphisa ukuphila.
② Amandla asetshenziswayo akhiqizwa amandla amakhulu abangela ukuthi izintambo zikhuhlane zodwa futhi anciphise ukuphila kokushisa.
③ Isimo se-jitter sothintana naye lapho iswishi yamandla kagesi aphezulu ivaliwe izokhiqiza ukugeleza okungaphezulu kokusebenza ekujikeni kwe-stator yenjini, kwesinye isikhathi ifinyelele izikhathi ezingaphezu kwezingu-5 ku-voltage esetshenzisiwe, futhi ukugcwala okuphezulu okunjalo kuzodala umonakalo omkhulu ku-insulation motor. .
Uma kuqala okuthambile, umthamo omkhulu wamanje uncishiswa cishe ngesigamu, ukushisa osheshayo cishe ku-1/4 kuphela yesiqalo esiqondile, futhi impilo yokufakelwa izokwandiswa kakhulu;Lapho i-voltage yokuphela kwemoto ingalungiswa isuka ku-zero, umonakalo we-overvoltage ungaqedwa ngokuphelele.
Ukulimala kwamandla kagesi enjini
Umsinga omkhulu uzokhiqiza amandla amakhulu okuthonya ikhoyili ye-stator kanye nekheji ye-squirrel ejikelezayo, okuzokwenza ukuthi i-clamping ixege, i-coil deformation, ukuphuka kwekheji ye-squirrel kanye namanye amaphutha.
Ekuqaliseni okuthambile, amandla okuthinta ancipha kakhulu ngoba umkhawulo wamanje uncane.
5. Ukulimala kwemishini eyimishini
I-torque yokuqala ye-voltage egcwele eqondile yokuqala cishe izikhathi ezi-2 i-torque elinganiselwe, futhi i-torque enkulu kangaka yengezwa kungazelelwe emishinini emile, ezosheshisa ukugqokwa kwegiya noma ukushaywa kwamazinyo, ukusheshisa ukugqokwa kwebhande noma ukukhumula ibhande, ukusheshisa ukukhathala kwe-blade noma ngisho nokuphula i-wind blade, njalonjalo.
Ukusebenzisa i-motor soft starterukulawula ukuqala kwe-motor kungaxazulula ngokuphumelelayo izinkinga ezingenhla ezibangelwa ukuqala okuqondile.
Isikhathi sokuthumela: Jul-24-2023