1. Amandla angemuva e-electromotive akhiqizwa kanjani?
Eqinisweni, isizukulwane samandla e-electromotive angemuva kulula ukusiqonda.Abafundi abanenkumbulo engcono kufanele bazi ukuthi baye bachayeka kuyo kusukela esikoleni samabanga aphakeme nabasesikoleni esiphakeme.Kodwa-ke, yayibizwa ngokuthi yi-electromotive force engaleso sikhathi.Isimiso siwukuthi umqhubi usika imigqa kazibuthe.Inqobo nje uma kukhona ukunyakaza okuhlobene okubili kwanele, noma insimu kazibuthe ayinyakazi futhi umqhubi uyasikeka;kungase futhi kube ukuthi umqhubi akanyakazi futhi insimu kazibuthe iyanyakaza.
Ukuze uthole ukuvumelanisa kazibuthe unomphelaimoto, amakhoyili ayo agxilile ku-stator (conductor), futhi ama-magnets ahlala njalo agxiliwe ku-rotor (insimu kazibuthe).Lapho i-rotor izungeza, inkambu kazibuthe ekhiqizwe yizibuthe ezihlala njalo ku-rotor izojikeleza futhi ikhangwe yi-stator.Ikhoyili ekhoyili iyasikwa futhiamandla e-electromotive angemuvaikhiqizwa ikhoyili.Kungani ibizwa ngokuthi i-back electromotive force?Njengoba igama libonisa, ngenxa yokuthi isiqondiso samandla ka-Electromotive angemuva aphambene nendawo ye-voltage engu-U (njengoba kuboniswe kuMfanekiso 1).
2. Buyini ubudlelwano phakathi kwamandla e-electromotive angemuva kanye ne-terminal voltage?
Kungabonakala kuMfanekiso 1 ukuthi ubudlelwano phakathi kwamandla kagesi angemuva kanye ne-terminal voltage ngaphansi komthwalo yilokhu:
Ukuze kuhlolwe amandla e-electromotive angemuva, ngokuvamile ahlolwa ngaphansi kwesimo sokungalayishi, akukho okwamanje, futhi isivinini sokuzungeza singu-1000rpm.Ngokuvamile, inani elingu-1000rpm liyachazwa, futhi i-electromotive force coefficient yangemuva = inani elimaphakathi lamandla/isivinini se-electromotive yangemuva.I-back electromotive force coefficient iyipharamitha ebalulekile yemoto.Kumele kuqashelwe lapha ukuthi amandla e-electromotive angemuva ngaphansi komthwalo ahlala eshintsha ngaphambi kokuba isivinini sizinzile.Kusukela ku-equation (1), singakwazi ukwazi ukuthi amandla e-electromotive angemuva ngaphansi komthwalo angaphansi kwe-terminal voltage.Uma amandla e-electromotive angemuva emakhulu kune-terminal voltage, iba ijeneretha bese ikhipha i-voltage ngaphandle.Njengoba ukumelana nokusebenza kwamanje emsebenzini wangempela kukuncane, inani lamandla e-electromotive angemuva licishe lilingane ne-terminal voltage futhi lilinganiselwe inani elilinganiselwe le-voltage yetheminali.
3. Incazelo ebonakalayo yamandla e-electromotive angemuva
Cabanga ukuthi bekuzokwenzekani uma amandla e-electromotive angemuva abengekho?Kungabonakala ku-equation (1) ukuthi ngaphandle kwamandla e-electromotive angemuva, yonke injini ilingana ne-resistor emsulwa futhi iba idivayisi ekhiqiza ukushisa okubi kakhulu.Lokhukuphambene neqiniso lokuthi injini iguqula amandla kagesi abeamandla mechanical.
Ebudlelwaneni bokuguqulwa kwamandla kagesi
, I-UIt ingamandla kagesi okufakwayo, njengamandla kagesi okufakwayo ebhethri, injini noma i-transformer;I-I2Rt amandla okulahlekelwa ukushisa kumjikelezo ngamunye, le ngxenye yamandla iwuhlobo lwamandla okulahlekelwa ukushisa, okuncane kuba ngcono;okokufaka amandla kagesi nokulahlekelwa ukushisa Umehluko kumandla kagesi ingxenye yamandla awusizo ahambisana namandla angemuva e-electromotive.
, ngamanye amazwi, amandla e-electromotive angemuva asetshenziselwa ukukhiqiza amandla awusizo, ahlobene ngokuphambene nokulahlekelwa ukushisa.Uma amandla okulahlekelwa ukushisa abe mkhulu, aba mancane amandla awusizo angafinyelelwa.
Ukukhuluma ngokunenhloso, amandla e-electromotive angemuva adla amandla kagesi kusekethe, kodwa akuyona "ukulahlekelwa".Ingxenye yamandla kagesi ehambisana namandla e-electromotive angemuva izoguqulwa ibe amandla awusizo ezintweni zikagesi, njengamandla emishini enjini kanye namandla ebhethri.Amandla amakhemikhali njll.
Kungabonakala ukuthi usayizi wamandla e-electromotive angemuva asho ikhono lempahla kagesi ukuguqula ingqikithi yamandla okufakwayo abe amandla awusizo, futhi libonisa izinga lekhono lokuguqula impahla kagesi.
4. Ubukhulu bamandla e-electromotive yangemuva buncike kuphi?
Okokuqala nikeza ifomula yokubala ye-back electromotive force:
U-E ungamandla e-electromotive wekhoyili, ψ ukuxhuma kazibuthe, f imvamisa, N inani lokujika, futhi Φ ukugeleza kazibuthe.
Ngokusekelwe kufomula engenhla, ngikholelwa ukuthi wonke umuntu cishe angakwazi ukutshela izici ezimbalwa ezithinta ubukhulu bamandla e-electromotive angemuva.Nasi isifinyezo sendatshana:
(1) Amandla e-electromotive angemuva alingana nezinga lokushintsha kokuxhuma kazibuthe.Lapho ijubane lokujikeleza liphakeme, izinga lokushintsha likhulu kanye namandla e-electromotive angemuva;
(2) Isixhumanisi sikazibuthe ngokwaso silingana nenani lokujika eliphindaphindwe isixhumanisi sikazibuthe esijika kanye.Ngakho-ke, ukuphakama kwenani lokujika, isixhumanisi sikazibuthe sikhulu kanye namandla e-electromotive angemuva;
(3) Inani lokujika lihlobene nohlelo lokujikajika, uxhumano lwenkanyezi-delta, inani lokujika endaweni ngayinye, inani lezigaba, inani lamazinyo, inani lamagatsha ahambisanayo, uhlelo lwephimbo eliphelele noma iphimbo elifushane;
(4) Ukuxhumana kukazibuthe okuphenduka okukodwa kuyalingana namandla kazibuthe ahlukaniswe amandla kazibuthe.Ngakho-ke, amandla amakhulu e-magnetomotive, amancane amandla kazibuthe ekuqondeni kokuxhuma kazibuthe, futhi mkhulu amandla e-electromotive angemuva;
(5) Ukumelana kazibutheihlobene nokubambisana kwegebe lomoya kanye ne-pole slot.Uma sikhulu igebe lomoya, amandla amakhulu kazibuthe futhi amancane amandla e-electromotive angemuva.Ukuxhumanisa i-pole-groove kuyinkimbinkimbi futhi kudinga ukuhlaziywa okuningiliziwe;
(6) Amandla kazibuthe ahlobene nokusala kukazibuthe kanye nendawo esebenza kahle kazibuthe.Uma i-remanence iba nkulu, iyanda amandla e-electromotive angemuva.Indawo ephumelelayo ihlobene nesiqondiso samagnetizing, ubukhulu kanye nokubekwa kukazibuthe, futhi kudinga ukuhlaziywa okuqondile;
(7) Uzibuthe osalayo uhlobene nezinga lokushisa.Uma izinga lokushisa liphakeme, amandla e-electromotive angemuva abe mancane.
Kafushane, izici ezithonya amandla e-electromotive angemuva afaka isivinini sokujikeleza, inani lokujika kwendawo ngayinye, inani lezigaba, inani lamagatsha ahambisanayo, iphimbo elifushane lilonke, isifunda sozibuthe, ubude begebe lomoya, ukuxhumanisa kwe-pole-slot, uzibuthe osalayo kazibuthe, kanye nendawo yokubeka uzibuthe.Futhi usayizi kazibuthe, uzibuthe magnetization isiqondiso, izinga lokushisa.
5. Ungakhetha kanjani usayizi wamandla e-electromotive angemuva ekwakhiweni kwemoto?
Ekwakhiweni kwezimoto, i-electromotive force E yangemuva ibaluleke kakhulu.Ngicabanga ukuthi uma amandla e-electromotive angemuva eklanywe kahle (ukukhethwa kosayizi ofanelekile kanye nezinga eliphansi lokuhlanekezela kwe-waveform), injini izoba yinhle.Imiphumela eyinhloko ye-back electromotive force kuma-motors imi kanje:
1. Usayizi wamandla e-electromotive angemuva anquma indawo eyenza buthaka yenjini, futhi indawo eyenza buthaka inquma ukusatshalaliswa kwemephu yokusebenza kahle kwemoto.
2. Izinga lokuhlanekezela le-electromotive force waveform yangemuva lithinta itorque enyakazayo yemoto nokuzinza kokukhiphayo kwetorque lapho injini isebenza.
3. Ubukhulu bamandla e-electromotive angemuva bunquma ngokuqondile i-torque coefficient ye-motor, futhi i-coefficient yamandla e-electromotive yangemuva ilingana ngokuqondile ne-coefficient ye-torque.Kulokhu singakwazi ukudweba ukuphikisana okulandelayo okubhekene nokwakhiwa kwezimoto:
a.Njengoba amandla e-electromotive angemuva enyuka, i-motor ingagcina i-torque ephezulu ngaphansiokomlawulikhawulela ukusebenza endaweni enesivinini esiphansi, kodwa awukwazi ukukhipha i-torque ngesivinini esiphezulu, noma ufinyelele isivinini esilindelekile;
b.Lapho amandla e-electromotive angemuva emancane, injini isenamandla okukhipha endaweni enesivinini esikhulu, kodwa i-torque ayikwazi ukufinyelelwa ngaphansi kwesilawuli esifanayo ngesivinini esiphansi.
Ngakho-ke, ukwakheka kwamandla e-electromotive angemuva kuncike ezidingweni zangempela zemoto.Isibonelo, ekwakhiweni kwenjini encane, uma kudingekile ukuthi kusakhipha i-torque eyanele ngesivinini esiphansi, khona-ke amandla e-electromotive angemuva kufanele aklanywe ukuthi abe mkhulu.
Isikhathi sokuthumela: Feb-04-2024