Umongo wokulawula ugesi wemoto kagesi ukulawulwa kwezimoto. Kuleli phepha, umgomo we-star-delta oqala ukusetshenziswa kakhulu embonini usetshenziselwa ukukhulisa ukulawulwa kwemoto kagesi, ukuze uhlelo lokushayela ngogesi lwe-48V lube uhlobo oluyinhloko lwamandla okushayela e-10-72KW.Ukusebenza kwayo yonke imoto kuqinisekisiwe, futhi ngesikhathi esifanayo, izindleko zokushayela ugesi zezimoto ezincane nezimoto ezincane ziyancipha kakhulu,
Ocwaningweni lwakamuva, ngibone ukuthi ukulawulwa kwezimoto zikagesi empeleni kungukulawula kwenjini.Ngenxa yokuthi ulwazi oluhilelekile kulesi sihloko luningi kakhulu futhi luningiliziwe, uma isimiso kanye nenqubo yokuthuthukisa uhlelo lokulawula izimoto kuchazwe ngokugcwele, ngokusho kwezincwadi ezifundwa umlobi okwamanje, amaphuzu olwazi anele ukukhiqiza i-monograph. enamakhasi angaphezu kwe-100 namagama angaphezu kwe-100,000.Ukuze uvumele abafundi bemithombo yezokuxhumana ukuthi baqonde futhi basebenzise indlela enjalo yokuthuthukisa phakathi kwezinkulungwane zamagama.Lesi sihloko sizosebenzisa izibonelo ezithile ukuchaza inqubo yokuthuthukisa isikimu semoto kagesi.
Izibonelo ezichazwe lapha zisekelwe ku-Baojun E100, BAIC EC3, kanye ne-BYD E2.Amapharamitha alandelayo kuphela amamodeli amabili adinga ukuhlotshaniswa, futhi isilawuli semoto kuphela esithuthukisiwe ukuze sithuthukiswe sibe yisistimu yebhethri engu-48V/144V DC dual-voltage, i-AC 33V/99V dual-voltage motor kanye nesethi yabashayeli bezimoto. .Phakathi kwabo, uhlelo lwe-elekthronikhi lwamandla omshayeli wemoto luyisihluthulelo salo lonke uhlelo lokusebenzisa kahle, futhi umlobi ufunda ngokucophelela nangokujulile.
Ngamanye amazwi, izinjini ze-Baojun E100, BAIC EC3, ne-BYD E2 zidinga kuphela ukuthuthukiswa zibe yisistimu yokulawula izithuthuthu engu-29-70KW.Laba ngabamele imoto encane i-A00, imoto encane i-A0, kanye nemoto kagesi ecwebile i-A compact pure.Lesi sihloko sizosebenzisa indlela yezimboni yezigaba ezintathu ze-asynchronous motor control ukuze siyisebenzise ekulawuleni amamotho ezimoto zikagesi ngokusebenzisa i-star-delta, i-V/F+DTC yesigaba sesithathu se-asynchronous induction motor control.
Ngenxa yokulinganiselwa kwesikhala, lesi sihloko ngeke sichaze izimiso zikanxantathu wenkanyezi nokunye.Ake siqale ngamandla emoto ajwayelekile ekulawuleni izimboni. I-380V evame ukusetshenziswa ye-asynchronous motor enezigaba ezintathu ingu-0.18~315KW, amandla amancane awuxhumano lwe-Y, amandla aphakathi nendawo awuxhumano △, futhi amandla aphezulu angu-380/660V motor.Ngokuvamile, ama-motor angu-660V angama-motor amakhulu angaphezu kuka-300KW. Akukhona ukuthi izinjini ezingaphezu kuka-300KW azikwazi ukusebenzisa i-380V, kodwa ukuthi umnotho wazo awumuhle.Kuyinto yamanje ekhawulela umnotho we-motor kanye ne-control circuit.Ngokuvamile imilimitha yesikwele engu-1 ingadlula i-6A yamanje. Lapho i-motor ye-asynchronous induction eyizigaba ezintathu isiklanywe, ikhebula layo elijikayo lemoto liyanqunywa.Okusho ukuthi, ukudlula kwamanje kuyanqunywa.Ngokombono wezinjini zezimboni, i-500A iyinani elikhulu kunawo wonke emnothweni wayo.
Emuva enjini yemoto kagesi, i-PWM yesigaba sesithathu samandla kagesi wesistimu yebhethri engu-48V ingu-33V.Uma umnotho wemoto yezimboni ungu-500A, inani eliphezulu lokonga lemoto kagesi engu-48V licishe libe ngu-27KW enjini yokungenisa izigaba ezintathu.Ngesikhathi esifanayo, uma ucabangela izici eziguquguqukayo zemoto, isikhathi sokufinyelela umkhawulo wamanje sifushane kakhulu, ngokuvamile singabi ngaphezu kwemizuzu embalwa, okusho ukuthi, i-27KW ingenziwa ibe yisimo sokulayisha ngokweqile.Imvamisa isimo sokugcwala ngokweqile siyizikhathi ezi-2 kuya kwezi-3 zesimo esijwayelekile.Okusho ukuthi, isimo esijwayelekile sokusebenza singu-9 ~ 13.5KW.
Uma sibheka kuphela izinga le-voltage kanye nokufanisa umthamo wamanje.Uhlelo lwe-48V lungaba phakathi kuka-30KW kuphela njengoba ukusebenza kahle kokushayela kuyisimo esingcono kakhulu sokusebenza.
Kodwa-ke, kunezindlela eziningi zokulawula zama-motor asynchronous ezigaba ezintathu. Izimoto zikagesi zinezinhlobo eziningi zokulawula isivinini (cishe u-0-100%) kanye nohlu lokulawula i-torque (cishe u-0-100%).Ngaphansi kwezimo zokusebenza ezinzima, izimoto zikagesi okwamanje zisebenzisa i-VF noma i-DTC control.Uma kwethulwa ukulawula kwe-star-delta, kungase kubangele umphumela ongalindelekile.
Ekulawulweni kwezimboni, i-star-delta control voltage yizikhathi ezingu-1.732, okuyinto eyenzeka ngengozi kunesimiso.Uhlelo lwe-48V alukwenyusi ukuguquguquka kwefrikhwensi ye-PWM ukwenza i-AC 33V, kanti injini eklanywe ngokwezinga lamandla kagesi wezimboni ingu-57V.Kodwa silungisa izinga likagesi lokulawula inkanyezi-delta libe izikhathi ezi-3, okuyimpande ka-9.Bese kuba ngu-99V.
Okusho ukuthi, uma injini iklanywe njenge-99V AC enezigaba ezintathu ze-asynchronous motor enoxhumo lwe-delta kanye noxhumo lwe-33V Y, isivinini semoto singashintshwa sisuka ku-0 siye ku-100% ngaphakathi kwebanga lamandla angu-20 kuya ku-72KW ngaphansi komnotho. izimo. Imvamisa isivinini esiphezulu semoto singu-12000RPM), ukulawulwa kwetorque ngu-0-100%, kanti ukushintshwa kwemvamisa kungu-0-400Hz.
Uma uhlelo olunjalo lokuthuthukisa lungafezeka, khona-ke izimoto ze-A-class nezimoto ezincane zingathola ukusebenza okuhle ngemoto eyodwa.Siyazi ukuthi izindleko zesistimu yemoto engu-48V (ngaphakathi kwenani eliphakeme elingu-30KW) zingaba ngu-5,000 yuan. Izindleko zohlelo lokuthuthukisa kuleli phepha azaziwa, kodwa alingezi izinto zokwakha, kodwa lishintsha kuphela indlela yokulawula futhi lingenise amazinga kagesi amabili.Ukunyuka kwezindleko zayo nakho kuyalawuleka.
Yiqiniso, kuzoba nezinkinga eziningi ezintsha ohlelweni olunjalo lokulawula. Izinkinga ezinkulu ukwakheka kwemoto, ukuklanywa komshayeli, kanye nezidingo eziphakeme kakhulu zokushaja nokukhipha izici zephakethe lebhethri elinamandla amakhulu.Lezi zinkinga ziyalawuleka futhi kunezixazululo ezikhona. Isibonelo, ukwakhiwa kwezimoto kungaxazululwa ngokulungisa isilinganiso samazinga kagesi aphezulu naphansi.Sizoxoxa ngakho ndawonye esihlokweni esilandelayo.
Isikhathi sokuthumela: Mar-02-2023