Uluhlu lwesantya semoto yokuqhuba imoto luhlala lubanzi, kodwa kutsha nje ndiye ndadibana neprojekthi yemoto yobunjineli kwaye ndaziva ngathi iimfuno zomthengi zinzima kakhulu.Akulungele ukuthetha idatha ethile apha.Ngokubanzi, amandla alinganisiweyo ngamakhulu aliqela eekilowathi, isantya esilinganisiweyo ngu-n(N), kunye nesantya esiphezulu n(max) samandla angaguqukiyo malunga ne-3.6 umphinda-phinde ngo-n(N);Imoto ayivavanywa ngesantya esiphezulu.amandla, engaxutyushwanga kweli nqaku.
Indlela eqhelekileyo kukunyusa isantya esilinganisiweyo ngokufanelekileyo, ukwenzela ukuba uluhlu lwesantya samandla esingaguqukiyo sibe sincinci.Ukungalungi kukuba i-voltage kwindawo yokuqala yesantya iyancipha kwaye yangoku iba nkulu;nangona kunjalo, ngokuqwalasela ukuba i-current yesithuthi iphezulu kwisantya esiphantsi kunye ne-torque ephezulu, iyamkeleka ngokubanzi ukutshintshela isantya esilinganisiweyo ngolu hlobo.Nangona kunjalo, kusenokwenzeka ukuba ishishini leemoto lintsonkothile kakhulu.Umthengi ufuna ukuba okwangoku kufuneka kungatshintshi kulo lonke uluhlu lwamandla azinzileyo, ngoko ke kufuneka siqwalasele ezinye iindlela.
Into yokuqala ethi qatha engqondweni kukuba ekubeni amandla aphumayo akakwazi ukufikelela kumandla alinganisiweyo emva kokugqithisa isantya esiphezulu sesantya n(max) samandla angaguqukiyo, emva koko sinciphisa amandla alinganisiweyo ngokufanelekileyo, kwaye n(max) iya kunyuka (ivakalelwa). kancinane njengengqwele ye-NBA “ayikwazi ukubetha Joyina nje”, okanye ekubeni ungaluphumelelanga uviwo ngamanqaku angama-58, emva koko usete umgca wokupasa ngamanqaku angama-50), oku kukwandisa umthamo wemoto ukuphucula isakhono sokubaleka.Umzekelo, ukuba siyila i-100kW motor, kwaye emva koko siphawule amandla alinganisiweyo njengama-50kW, ingaba uluhlu lwamandla olungaguqukiyo aluzuphuculwa kakhulu?Ukuba i-100kW inokugqithisa isantya ngama-2 amaxesha, akukho ngxaki ukudlula isantya ubuncinane ngamaxesha ama-3 ku-50kW.
Ngokuqinisekileyo, le ngcamango inokuhlala kuphela kwinqanaba lokucinga.Wonke umntu uyazi ukuba umthamo weemoto ezisetyenziswa kwizithuthi ulinganiselwe kakhulu, kwaye akukho ndawo yamandla aphezulu, kwaye ukulawulwa kweendleko kubaluleke kakhulu.Ngoko le ndlela ayikwazi ukusombulula eyona ngxaki.
Masiqwalasele nzulu ukuba lithetha ukuthini eli nqaku lokutshintsha.Ku-n(ubuninzi), awona mandla aphezulu ngamandla alinganisiweyo, oko kukuthi, ubuninzi betorque eninzi k(T)=1.0;ukuba i-k(T)>1.0 kwindawo ethile yesantya, ithetha ukuba inamandla okwandisa amandla.Ke yinyani ukuba inkulu i-k(T) kukuba, kokukhona unamandla okwandisa isantya?Ngethuba nje i-k (T) kwindawo ye-n (N) yesantya esilinganisiweyo siyilwe sikhulu ngokwaneleyo, ngaba isantya solawulo lwesantya samandla samaxesha angama-3.6 sinokuneliseka?
Xa i-voltage izimisele, ukuba i-reactance yokuvuza ihlala ingatshintshi, i-torque ephezulu ihambelana ngokungafaniyo nesantya, kwaye i-torque ephezulu iyancipha njengoko isantya sinyuka;enyanisweni, ukusabela ukuvuza kwakhona utshintsho kunye nesantya, nto leyo eya kuxoxwa kamva.
Amandla alinganisiweyo (i-torque) ye-motor inxulumene ngokusondeleyo kwizinto ezahlukeneyo ezifana nenqanaba lokugquma kunye neemeko zokutshatyalaliswa kobushushu.Ngokuqhelekileyo, i-torque ephezulu yi-2 ~ 2.5 amaxesha e-torque elinganisiweyo, oko kukuthi, k (T) ≈2 ~ 2.5.Njengoko umthamo wemoto usanda, i-k(T) ithande ukuhla.Xa amandla angatshintshiyo egcinwa kwisantya n (N) ~n (max), ngokwe-T = 9550 * P / n, ubudlelwane phakathi kwe-torque elinganisiweyo kunye nesantya kwakhona ngokungafaniyo.Ngoko ke, ukuba (qaphela ukuba le yimod yokuzithoba) ukusabela kokuvuza akutshintshi ngesantya, ubuninzi be-torque k(T) buhlala bungatshintshi.
Enyanisweni, sonke siyazi ukuba ukusabela kuyalingana nemveliso ye-inductance kunye ne-angular velocity.Emva kokuba i-motor igqityiwe, i-inductance (i-leakage inductance) iphantse ingatshintshi;isantya semoto siyanda, kwaye ukusabela kokuvuza kwe-stator kunye ne-rotor kwandisa ngokulinganayo, ngoko ke isantya apho i-torque ephezulu iyancipha ngokukhawuleza kune-torque elinganisiweyo.Kude kube ngu-(max), k(T)=1.0.
Kuninzi okuxoxiwe ngasentla, ukucacisa nje ukuba xa i-voltage ihleli, inkqubo yokunyusa isantya yinkqubo ye-kT iyancipha ngokuthe ngcembe.Ukuba ufuna ukwandisa uluhlu lwesantya samandla esingaguqukiyo, kufuneka unyuse i-k(T) ngesantya esikaliwe.Umzekelo n(max)/n(N)=3.6 kweli nqaku akuthethi ukuba k(T)=3.6 yanele ngesantya esilinganiselweyo.Ngenxa yokuba ilahleko yefriction yomoya kunye nelahleko yentsimbi core inkulu kwizantya eziphezulu, i-k(T)≥3.7 iyafuneka.
Ubukhulu betorque bumalunga ngokuchasana nesambuku se-stator kunye ne-rotor leakge reactance, oko kukuthi.
1. Ukunciphisa inani labaqhubi kwi-series kwisigaba ngasinye se-stator okanye ubude bentsimbi yentsimbi busebenza ngokubonakalayo ekuphenduleni ukuvuza kwe-stator kunye ne-rotor, kwaye kufuneka inikwe kuqala;
2. Ukwandisa inani le-stator slots kunye nokunciphisa ukuvuza okucacileyo kweendawo zokubeka i-stator (iziphelo, i-harmonics), esebenzayo kwi-reactance yokuvuza kwe-stator, kodwa ibandakanya iinkqubo ezininzi zokuvelisa kwaye inokuchaphazela ezinye iintsebenzo, ngoko kuyacetyiswa ukuba lumkile
3. Kwii-rotors ezininzi ze-cage-type ezisetyenzisiweyo, ukwandisa inani le-rotor slots kunye nokunciphisa ukuvuza okucacileyo kwe-rotor (ingakumbi ukuvuza okucacileyo kwe-rotor slots) kuyasebenza kwi-rotor leak reactance kwaye ingasetyenziswa ngokupheleleyo.
Kwifomula yokubala ethile, nceda ubhekisele kwincwadi ethi "Motor Design", engasayi kuphinda apha.
Iinjini zamandla aphakathi kunye aphezulu zihlala zineenguqu ezimbalwa, kwaye uhlengahlengiso oluncinci lunempembelelo enkulu ekusebenzeni, ngoko ke ukulungiswa kakuhle ukusuka kwicala le-rotor kunokwenzeka ngakumbi.Kwelinye icala, ukuze kuncitshiswe impembelelo yokunyuka rhoqo kwilahleko engundoqo, amacwecwe entsimbi e-silicon asezantsi aqhele ukusetyenziswa.
Ngokutsho kwesikimu sokuyila ingcamango engentla, ixabiso elibaliweyo lifikelele kwiimfuno zobugcisa zomthengi.
PS: Uxolo ngeakhawunti esemthethweni ye-watermark egubungela oonobumba abathile kwifomula.Ngethamsanqa, ezi fomyula kulula ukuzifumana "kwiNjineli yoMbane" kunye "noYilo lweMoto", ndiyathemba ukuba ayizukuchaphazela ukufunda kwakho.
Ixesha lokuposa: Mar-13-2023