1. Ibangela ukuguquguquka kwamandla ombane kwigridi yamandla, echaphazela ukusebenza kwezinye izixhobo kwigridi yamandla
Xa i-AC motor iqaliswe ngokuthe ngqo kwi-voltage epheleleyo, ukuqala kwangoku kuya kufikelela kuma-4 ukuya kuma-7 amaxesha alinganisiweyo.Xa umthamo we-motor mkhulu kakhulu, ukuqala kwangoku kuya kubangela ukuhla okubukhali kwi-voltage yegridi, okuchaphazela ukusebenza okuqhelekileyo kwezinye izixhobo kwigridi.
Ngexesha lokuqalisa okuthambileyo, umsinga wokuqalisa ngokuqhelekileyo ngamaxesha angama-2-3 ombane olinganisiweyo, kwaye ukuguquguquka kwamandla ombane wegridi ngokuqhelekileyo kungaphantsi kwe-10%, enempembelelo encinci kwezinye izixhobo.
⒉ Impembelelo kwigridi yamandla
Impembelelo kwigridi yamandla ibonakaliswa ikakhulu kwimiba emibini:
① Impembelelo yomsinga omkhulu oqaliswe ngokuthe ngqo yimoto enkulu kakhulu kwigridi yamandla iphantse ifane nempembelelo yesigaba esithathu sesekethe emfutshane kwigridi yamandla, ehlala ibangela ukujikeleza kwamandla kwaye yenza igridi yamandla ilahlekelwe uzinzo.
② Ukuqala kwangoku kuqulethe inani elikhulu lee-harmonics zomyalelo ophezulu, oya kubangela i-resonance ephezulu ye-resonance kunye neeparamitha zesekethe yegridi, okukhokelela ekukhuselweni kwe-relay misoperation, ukungaphumeleli kokulawula ngokuzenzekelayo kunye nezinye iimpazamo.
Ngexesha lokuqalisa okuthambileyo, ukuqala kwangoku kuncitshiswa kakhulu, kwaye iziphumo ezingentla zinokupheliswa ngokupheleleyo.
Ukonakaliswa kwe-motor insulation, ukunciphisa ubomi beemoto
① Ubushushu be-Joule obuveliswa ngumbane omkhulu ngokuphindaphindiweyo busebenza kwi-insulation yangaphandle yocingo, okukhawuleza ukuguga kwe-insulation kunye nokunciphisa ubomi.
② Amandla omatshini okwenziwa ngumsinga omkhulu kubangela ukuba iingcingo zikhuhlane omnye komnye kwaye zinciphise ubomi bokugquma.
③ Into ye-jitter yoqhagamshelwano xa i-voltage ephezulu ivaliwe iya kuvelisa i-overvoltage yokusebenza kwi-stator winding ye-motor, ngamanye amaxesha ifikelela ngaphezu kwe-5 yamaxesha ombane osetyenzisiweyo, kwaye ukugqithisa okuphezulu kuya kubangela ingozi enkulu kwi-motor insulation. .
Xa isiqalo esithambileyo, ubuninzi bangoku buncitshiswe malunga nesiqingatha, ukushisa kwangoku kuphela malunga ne-1/4 yesiqalo esithe tye, kwaye ubomi be-insulation buya kwandiswa kakhulu;Xa i-voltage yokuphela kwemoto inokulungiswa ukusuka kwi-zero, umonakalo ogqithisileyo unokupheliswa ngokupheleleyo.
Umonakalo wamandla ombane kwimoto
Umsinga omkhulu uya kuvelisa amandla amakhulu empembelelo kwi-coil ye-stator kunye nekheji ye-squirrel ejikelezayo, eya kubangela ukuba i-clamping ikhulule, i-coil deformation, i-squirrel cage breakage kunye nezinye iimpazamo.
Kwisiqalo esithambileyo, amandla empembelelo ancitshiswa kakhulu ngenxa yokuba ubuninzi bangoku buncinci.
5. Ukonakaliswa kwezixhobo zoomatshini
I-torque yokuqala ye-voltage epheleleyo eqala ngokuthe ngqo imalunga namaxesha ama-2 etorque elinganisiweyo, kwaye itorque enkulu ngolo hlobo yongezwa ngequbuliso kwisixhobo somatshini esimileyo, esiya kukhawulezisa ukunxiba kwegiya okanye ukubetha kwamazinyo, ukukhawulezisa ukunxitywa kwebhanti okanye ukukhupha ibhanti, ukukhawulezisa ukudinwa kwe-blade okanye kwaphule i-wind blade, njalo njalo.
Ukusebenzisa imotor soft starterukulawula ukuqala kwemoto kunokusombulula ngempumelelo ezi ngxaki zingasentla ezibangelwa kukuqalisa ngokuthe ngqo.
Ixesha lokuposa: Jul-24-2023