01. I-MTPA ne-MTPV
I-Permanent magnet synchronous motor iyithuluzi lokushayela eliyinhloko lezitshalo zamandla emoto entsha e-China.Kuyaziwa ukuthi ngesivinini esiphansi, i-magnetic synchronous motor unomphela isebenzisa ukulawulwa kwesilinganiso esiphezulu se-torque yamanje, okusho ukuthi uma kunikezwe i-torque, kusetshenziselwa ukulinganisa okuncane okuhlanganisiwe ukuze kufezeke, ngaleyo ndlela kuncishiswe ukulahlekelwa kwethusi.
Ngakho-ke ngesivinini esikhulu, asikwazi ukusebenzisa amajika e-MTPA ukulawula, sidinga ukusebenzisa i-MTPV, okuyisilinganiso esiphezulu samandla kagesi we-torque, ukuze silawule.Okusho ukuthi, ngesivinini esithile, yenza i-motor ikhiphe i-torque ephezulu.Ngokomqondo wokulawula wangempela, uma kunikezwe itorque, isivinini esiphezulu singafinyelelwa ngokulungisa i-iq ne-id.Ngakho-ke i-voltage ibonakala kuphi?Ngenxa yokuthi lesi yisivinini esiphezulu, isiyingi somkhawulo we-voltage silungisiwe.Kuphela ngokuthola indawo enkulu yamandla kulo mbuthano womkhawulo lapho kungatholakala khona iphuzu eliphezulu letorque, elihlukile kune-MTPA.
02. Izimo zokushayela
Ngokuvamile, lapho kuphenduka isivinini (esaziwa nangokuthi i-base velocity), inkambu kazibuthe iqala ukuba buthaka, okuyiphuzu A1 emfanekisweni olandelayo.Ngakho-ke, kuleli qophelo, amandla e-electromotive reverse azoba makhulu uma kuqhathaniswa.Uma inkambu kazibuthe ibuthakathaka ngalesi sikhathi, kucatshangwa ukuthi inqola iphoqeleka ukuthi inyuse isivinini, izophoqa i-iq ukuthi ibe negethivu, ayikwazi ukukhipha i-torque eya phambili, futhi iphoqelelwe ukuthi ingene esimweni sokukhiqiza amandla.Yiqiniso, leli phuzu alikwazi ukutholakala kule grafu, ngoba i-ellipse iyancipha futhi ayikwazi ukuhlala endaweni engu-A1.Singanciphisa kuphela i-iq ku-ellipse, sikhulise i-id, futhi sisondele ephoyintini elingu-A2.
03. Izimo zokuphehla ugesi
Kungani ukukhiqizwa kwamandla nakho kudinga uzibuthe obuthakathaka?Akufanele yini uzibuthe oqinile usetshenziselwe ukukhiqiza i-iq enkulu uma kuphehlwa ugesi ngesivinini esikhulu?Lokhu akunakwenzeka ngoba ngesivinini esikhulu, uma ingekho inkambu kazibuthe ebuthaka, amandla e-electromotive reverse, amandla e-transformer electromotive, namandla e-impedance electromotive angase abe kukhulu kakhulu, awedlule kude amandla kagesi, okuholela emiphumeleni emibi kakhulu.Lesi simo singugesi wokulungisa ongalawuleki we-SPO!Ngakho-ke, ngaphansi kokukhiqizwa kwamandla ngesivinini esikhulu, i-magnetization ebuthakathaka kufanele futhi yenziwe, ukuze i-voltage ye-inverter ekhiqiziwe ilawuleke.
Singakwazi ukuyihlaziya.Uma sicabanga ukuthi i-braking iqala endaweni yokusebenza enesivinini esiphezulu i-B2, okuwukubhuleka impendulo, futhi ijubane liyehla, asikho isidingo sozibuthe obuthaka.Ekugcineni, endaweni ethi B1, iq ne-id zingahlala zingashintshi.Kodwa-ke, njengoba isivinini sincipha, i-iq eyinegethivu ekhiqizwa amandla e-electromotive ehlane izoba kancane kancane ngokwanele.Kuleli qophelo, isinxephezelo samandla siyadingeka ukuze kufakwe amabhuleki okusetshenziswa kwamandla.
04. Isiphetho
Ekuqaleni kokufunda ama-motor kagesi, kulula ukuzungezwa yizimo ezimbili: ukushayela nokukhiqiza ugesi.Eqinisweni, kufanele siqale siqophe imibuthano ye-MTPA ne-MTPV ebuchosheni bethu, futhi siqaphele ukuthi i-iq ne-id ngalesi sikhathi ziphelele, zitholwe ngokucabangela amandla e-electromotive ahlanekezelwe.
Ngakho-ke, mayelana nokuthi i-iq ne-id ngokuvamile kukhiqizwa umthombo wamandla noma amandla e-electromotive ahlehlayo, kuncike kusiguquli ukuze kuzuzwe ukulawulwa.I-iq ne-id nazo zinemikhawulo, futhi umthetho awukwazi ukudlula imibuthano emibili.Uma umkhawulo wamanje weqiwa, i-IGBT izolimala;Uma isiyingi somkhawulo kagesi sidlula, ukunikezwa kwamandla kuzolimala.
Enqubweni yokulungisa, i-iq ne-id yalokho okuqondiwe, kanye ne-iq yangempela ne-id, kubalulekile.Ngakho-ke, izindlela zokulinganisa zisetshenziswa kubunjiniyela ukuze kulinganiswe isilinganiso esifanelekile sokwabiwa se-id ye-iq ngesivinini esihlukile nama-torque okuqondiwe, ukuze kuzuzwe ukusebenza kahle okungcono kakhulu.Kungabonakala ukuthi ngemva kokuzungeza, isinqumo sokugcina sisancike ekulinganisweni kobunjiniyela.
Isikhathi sokuthumela: Dec-11-2023
