Iinjini eziqhelekileyo ziyilwe ngokuhambelana rhoqo kunye nevolthi engaguqukiyo, kwaye ayinakuhlangabezana ngokupheleleyo neemfuno zolawulo lwesantya sokuguqula isantya, ngoko ke azinakusetyenziswa njengeenjini zokuguqula amaza.
Umahluko phakathi kwemotor frequency frequency kunye nemoto eqhelekileyo ibonakaliswa ikakhulu kule miba mibini ilandelayo:
Okokuqala, iinjini eziqhelekileyo zinokusebenza kuphela ixesha elide kufutshane nombane wamandla, ngelixa ii-motor frequency frequency zingasebenza ixesha elide phantsi kweemeko eziphakamileyo okanye ezisezantsi kunombane wamandla; umzekelo, i-frequency yamandla kwilizwe lethu yi-50Hz. , ukuba i-motor eqhelekileyo ikwi-5Hz ixesha elide, iya kusilela ngokukhawuleza okanye yonakaliswe; kunye nenkangeleko ye-motor frequency frequency isombulula le ntsilelo yemoto eqhelekileyo;
Okwesibini, iinkqubo zokupholisa zeenjini eziqhelekileyo kunye neemotor frequency frequency zahlukile.Inkqubo yokupholisa yemoto eqhelekileyo inxulumene ngokusondeleyo nesantya sokujikeleza. Ngamanye amazwi, ngokukhawuleza i-motor ijikeleza, ingcono inkqubo yokupholisa, kwaye i-motor icotha ijikeleza, ingcono umphumo wokupholisa, ngelixa i-motor frequency frequency ayinayo le ngxaki.
Emva kokongeza i-frequency converter kwi-motor eqhelekileyo, umsebenzi wokuguqula i-frequency unokufezekiswa, kodwa ayisiyiyo i-motor ye-frequency yokwenyani. Ukuba isebenza phantsi kwemeko yefrikhwensi engeyoyamandla ixesha elide, imotor inokonakala.
01 Impembelelo ye-frequency converter kwi-motor ikakhulu ekusebenzeni kunye nokunyuka kobushushu bemoto
I-inverter inokuvelisa amanqanaba ahlukeneyo ombane we-harmonic kunye nangoku ngexesha lokusebenza, ukwenzela ukuba i-motor iqhube phantsi kwe-voltage ye-non-sinusoidal kunye yangoku. , eyona nto ibalulekileyo yilahleko yobhedu yerotor, ezi lahleko ziya kwenza i-motor ubushushu obongezelelweyo, ukunciphisa ukusebenza kakuhle, ukunciphisa amandla okuphuma, kunye nokunyuka kobushushu beenjini eziqhelekileyo zonyuka nge-10% -20%.
02 Amandla okugquma kwenjini
Isantya somthwali we-frequency converter sisuka kumawaka aliqela ukuya ngaphezulu kwe-10 kilohertz, ukuze i-stator winding yemoto imelane nesantya esiphezulu sokunyuka kwamandla ombane, elilingana nokusetyenziswa kwamandla ombane onyukayo kwimotor, eyenza ukuba Ukugqunywa kwe-inter-turn ye-motor ukumelana novavanyo olunzima ngakumbi. .
03 Ingxolo yombane weHarmonic kunye nokungcangcazela
Xa i-motor eqhelekileyo inikwe amandla sisiguquli samaza, ukungcangcazela kunye nengxolo ebangelwa ngumbane, oomatshini, umoya wokuphefumla kunye nezinye izinto ziya kuba nzima ngakumbi. I-harmonics equlethwe kumbane oguquguqukayo oguquguqukayo uphazamisana ne-harmonics yendawo yendalo yenxalenye ye-electromagnetic yemoto ukwenza amandla ahlukeneyo e-electromagnetic excitation, ngaloo ndlela inyusa ingxolo. Ngenxa yoluhlu olubanzi lokusebenza kwamaza ombane kunye noluhlu olubanzi lokuguquguquka kwesantya esijikelezayo, kunzima kwiifrikhwensi zamaza ahlukeneyo ombane we-electromagnetic ukunqanda ukungcangcazela rhoqo kwelungu ngalinye lesakhiwo.
04 Iingxaki zokupholisa kwi-rpm ephantsi
Xa i-frequency yonikezelo lwamandla iphantsi, ilahleko ebangelwa yi-harmonics ye-high-order kwi-power supply inkulu; okwesibini, xa isantya semoto sincipha, umthamo womoya wokupholisa uyancipha ngokuthe ngqo kwityhubhu yesantya, okukhokelela ekubeni ubushushu bemoto bungacinywa kwaye ubushushu bunyuke ngokukhawuleza. ukwanda, kunzima ukufezekisa imveliso yetorque rhoqo.
05Ngokujonga le meko ingentla, i-frequency conversion motor isebenzisa olu yilo lulandelayo
Ukunciphisa ukuxhathisa kwe-stator kunye ne-rotor kangangoko kunokwenzeka kwaye unciphise ilahleko yobhedu ye-wave esisiseko ukwenza ukunyuka kokulahleka kobhedu okubangelwa yi-harmonics ephezulu.
Intsimi yemagnethi engundoqo ayihluthi, enye kukuqwalasela ukuba i-harmonics ephezulu iya kwenza nzulu ukugcwala kwesekethe yemagnethi, kwaye enye kukuqwalasela ukuba amandla ombane ophumayo we-inverter anokongezwa ngokufanelekileyo ukuze kwandiswe i-torque ephantsi. iifrikhwensi.
Uyilo lwesakhiwo ikakhulu kukuphucula umgangatho wokugquma; iingxaki zokungcangcazela kunye nengxolo yemoto ziqwalaselwe ngokupheleleyo; indlela yokupholisa ithatha ukupholisa umoya ngenkani, oko kukuthi, eyona fan yokupholisa imoto ithatha imowudi yemoto ezimeleyo, kwaye umsebenzi wefeni yokupholisa ngenkani kukuqinisekisa ukuba imotor ibaleka ngesantya esiphantsi. ukupholisa phantsi.
I-coil isasazwe amandla e-motor frequency frequency incinci, kwaye ukuxhathisa kwe-silicon sheet sheet inkulu, ukuze impembelelo ye-high-frequency pulses kwi-motor incinci, kwaye i-inductance filtering effect ye-motor ingcono.
Iinjini eziqhelekileyo, oko kukuthi, ii-motor frequency power, zifuna kuphela ukuqwalasela inkqubo yokuqalisa kunye neemeko zokusebenza kwendawo enye yombane wamandla (inani likawonkewonke: uqhagamshelwano lwe-electromechanical), kwaye emva koko uyila i-motor; ngelixa ii-motor frequency frequency kufuneka zithathele ingqalelo inkqubo yokuqalisa kunye neemeko zokusebenza zawo onke amanqaku ngaphakathi koluhlu lokuguqulwa kwamaza, kwaye emva koko uyilo injini.
Ukuze uziqhelanise nobubanzi be-PWM ye-analog ye-analog ye-sinusoidal etshintshanayo ngoku isiphumo sangoku yi-inverter, equlethe i-harmonics eninzi, umsebenzi we-motor frequency eyenziwe ngokukodwa inokuqondwa njenge-reactor kunye ne-motor eqhelekileyo.
01 Umahluko phakathi kwemoto eqhelekileyo kunye nolwakhiwo oluguquguqukayo lweemoto
1. Iimfuno eziphezulu zokugquma
Ngokubanzi, ibakala lokugquma lemoto yokuguqula amaza ngu-F okanye ngaphezulu, kwaye ukugquma komhlaba kunye namandla okujika okujika kufuneka kuqiniswe, ngakumbi ukukwazi ukugquma ukumelana nombane wokuphefumla.
2. Iimfuno zokungcangcazela kunye nengxolo yeemotor eziguquguqukayo ziphezulu
Imoto yoguqulo oluphindaphindiweyo kufuneka ithathele ingqalelo ngokupheleleyo ubungqongqo bamacandelo eemoto kunye nayo yonke, kwaye izame ukonyusa ubuninzi bayo bendalo ukunqanda ukuphinda kusebenze ngamaza amandla.
3. Indlela yokupholisa ye-motor frequency frequency yahlukile
Imotor yokuguqula rhoqo ithatha ukupholisa umoya ngenkani, oko kukuthi, eyona fan yokupholisa imoto iqhutywa yimoto ezimeleyo.
4. Iimfuno ezahlukeneyo zamanyathelo okukhusela
Imilinganiselo yokugquma i-insulation kufuneka yamkelwe kwiinjini eziguquguqukayo ezinomthamo ongaphezulu kwe-160kW.Isizathu esona sizathu kukuba kulula ukuvelisa i-asymmetrical magnetic circuit, kwaye ivelise i-shaft current. Xa imisinga eyenziwa ngamanye amacandelo aphezulu-frequency asebenza kunye, i-shaft current iya kwanda kakhulu, ibangele umonakalo wokuthwala, ngoko ke amanyathelo okugquma athathwa ngokubanzi.Kwimotor yamandla eguquguqukayo rhoqo, xa isantya sidlula i-3000 / min, igrisi ekhethekileyo enokumelana nobushushu obuphezulu kufuneka isetyenziselwe ukuhlawulela ukunyuka kobushushu bokuthwala.
5. Iinkqubo zokupholisa ezahlukeneyo
Umbane oguquguqukayo we-frequency fan wokupholisa unikwe amandla ngumbane ozimeleyo ukuqinisekisa umthamo oqhubekayo wokupholisa.
02 Umahluko phakathi kwemoto eqhelekileyo kunye noyilo oluguquguqukayo lweemoto
1. Uyilo loMbane
Kwiimotor eziqhelekileyo ze-asynchronous, iiparamitha eziphambili zokusebenza eziqwalaselwa kuyilo ngumthamo wokugcwala, ukuqala kokusebenza, ukusebenza kakuhle kunye namandla amandla.I-motor variable frequency motor, ngenxa yokuba i-slip ebalulekileyo ihambelana ngokungafaniyo kunye ne-frequency yamandla, inokuqaliswa ngokuthe ngqo xa isiliphu esibalulekileyo sisondele kwi-1. Ngoko ke, umthamo ogqithisiweyo kunye nokusebenza kokuqala akufuneki ukuba kuthathelwe ingqalelo kakhulu, kodwa isitshixo. Ingxaki ekufuneka isonjululwe yindlela yokuphucula iperi yemoto. Ukuziqhelanisa nonikezelo lwamandla angeyo-sinusoidal.
2. Uyilo loLwakhiwo
Xa uyila ulwakhiwo, kuyafuneka ukuba kuqwalaselwe impembelelo yeempawu zonikezelo lwamandla angeyo-sinusoidal kwisakhiwo sokugquma, ukungcangcazela, kunye neendlela zokupholisa ingxolo yemotor frequency frequency.
Ixesha lokuposa: Oct-24-2022